WEBVTT - #1933 Walking On Soft Sand | Harps

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<v Speaker 1>I get a champs. Hey, I hope you're great. Hey,

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<v Speaker 1>So today's been an interesting day. It's Saturday, Saturday. It's Saturday,

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<v Speaker 1>and the person I was going to interview is Crook.

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<v Speaker 1>I couldn't interview that person. They're going to be on later.

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<v Speaker 1>So it's all cool, get the up, butter Cup. But

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<v Speaker 1>I was thinking to myself. I was thinking, self, what

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<v Speaker 1>am I going to do? Do we give it a miss?

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<v Speaker 1>Do we put up something that we did a long

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<v Speaker 1>time ago, or do I do I have a bit

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<v Speaker 1>of a chat to the gang. As it turns out,

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<v Speaker 1>I was doing something before. I was doing a little

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<v Speaker 1>bit of kind of figuring out of stuff, a bit

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<v Speaker 1>of research on like really simple research, but it's really interesting.

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<v Speaker 1>It's a very specific thing. So this is something of

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<v Speaker 1>an atypical podcast. Some of you will find this really interesting.

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<v Speaker 1>Some of you will not. If you're not really interested

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<v Speaker 1>in the kind of fitness exercise is health wellbeing stuff,

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<v Speaker 1>this might not be for you. Might be, but it's

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<v Speaker 1>really relevant for everybody, from people who are completely unfit

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<v Speaker 1>through to people who are a little exercise bunnies and

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<v Speaker 1>fitness kind of addicts. For one, a bedded word, so

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<v Speaker 1>one of the things that I do regularly is because

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<v Speaker 1>I live near the beach. I live about seven or

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<v Speaker 1>eight hundred meters from the beach. I walk to the beach,

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<v Speaker 1>and then I walk in the soft sand. Sometimes I

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<v Speaker 1>walk up above the beach where there's a dirt tracks,

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<v Speaker 1>sometimes on the concrete path that runs exactly by the beach,

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<v Speaker 1>and sometimes I more often than not, I walk at

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<v Speaker 1>least a k or two in the soft sand. And

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<v Speaker 1>it's always amazed me how different it is to walk

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<v Speaker 1>in soft I mean soft sand, not firm sand, but

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<v Speaker 1>soft sand, compared with walking on a hard surface, you know,

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<v Speaker 1>round the street, round suburbia, foot path, sidewalk, whatever you

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<v Speaker 1>call it. And I had a fair idea of calorie expenditure,

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<v Speaker 1>in other words, how much energy, how much more energy

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<v Speaker 1>we would need to complete the same task at the

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<v Speaker 1>same speed, In other words, a five kilometer walk for

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<v Speaker 1>an hour walking at five kilometers per hour, meaning of

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<v Speaker 1>course we walk five k's in one hour, which means,

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<v Speaker 1>of course, how speed is five kph. Of course, now

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<v Speaker 1>comparing that five kilometer per hour walk on a hard

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<v Speaker 1>surface versus a soft surface, like where you don't have

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<v Speaker 1>the same footing, you don't have the same purchase. It's

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<v Speaker 1>obviously much harder to walk one hundred steps in soft

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<v Speaker 1>sand than one hundred steps on a hard surface. So

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<v Speaker 1>what does that do? What does that do to the

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<v Speaker 1>calorie burning? What does that do to the energy expenditure? What? Now,

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<v Speaker 1>I erroneously thought, or I mistakenly thought, it probably increases

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<v Speaker 1>it by about I don't know, thirty to fifty percent,

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<v Speaker 1>which is quite an increase. Guess what I did a

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<v Speaker 1>little I did a little research looking for some actual

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<v Speaker 1>academic kind of study or some journal articles. And so

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<v Speaker 1>let me just preface this with so I used myself

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<v Speaker 1>as the guinea pig. So me eighty one kilo me

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<v Speaker 1>walking at So if you vague, if you're a bit

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<v Speaker 1>lighter than me, you would take these calories down if

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<v Speaker 1>we did same activity five k walk sixty minutes soft

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<v Speaker 1>sand versus hard surface. But eighty one kilogram me would

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<v Speaker 1>burn about or expend more scientifically, about two hundred and

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<v Speaker 1>eighty calories. Remembering that our calories energy measurement or measure

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<v Speaker 1>of energy, I should say I would expend about two

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<v Speaker 1>hundred and eighty calories in that five k walk. If

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<v Speaker 1>I was traversing the urban landscape, walking around on a

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<v Speaker 1>hard surface. Now, listen to this. Research indicates that walking

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<v Speaker 1>on soft sand requires significantly more energy than walking on

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<v Speaker 1>hard surfaces. Well, we knew that, but we didn't know

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<v Speaker 1>how much. A study published in the Journal of Experimental

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<v Speaker 1>Biology found that walking on sand says just sand, but anyway,

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<v Speaker 1>I'm going with soft sand demands approximately two point one

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<v Speaker 1>to two point seven times more energy expenditure than walking

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<v Speaker 1>at the same speed on a firm surface. So, in

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<v Speaker 1>other words, more than double and depending on how hard

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<v Speaker 1>you work, almost triple. Now that's crazy, that's crazy. So

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<v Speaker 1>have a listen to the numbers. So remember craig eighty

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<v Speaker 1>one kilo, craig five k walk one hour, two hundred

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<v Speaker 1>and eighty calories in my current shape and weight. Now,

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<v Speaker 1>then we transfer that activity from the hard surface to

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<v Speaker 1>the beach. Now I'm walking in soft sand. I'm doing

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<v Speaker 1>the same Now, this is the fascinating thing, Right, I'm

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<v Speaker 1>doing the exact same thing. I'm just doing it on

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<v Speaker 1>a different surface. So I'm walking, I'm walking at the

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<v Speaker 1>same speed, I'm in the same body, I'm the same weight,

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<v Speaker 1>and I'm doing it for the same duration. All the

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<v Speaker 1>variables are the same except for the surface that I'm

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<v Speaker 1>walking on. So if we look at so two hundred

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<v Speaker 1>eighty calories times, let's go the upper limit, which is

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<v Speaker 1>two point seven times more energy expended. So my calorie

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<v Speaker 1>expenditure would go in that time from two hundred and

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<v Speaker 1>eighty calories to seven hundred and fifty six. Now, even

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<v Speaker 1>if we just doubled it, which is lower than what

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<v Speaker 1>they're saying, because their bottom is their ranges two point

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<v Speaker 1>one to two point seven. Even if we just doubled it, well,

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<v Speaker 1>it still is five hundred and sixty calories. If we

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<v Speaker 1>go to the kind of the middle of their predicted

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<v Speaker 1>range two point one to two point seven, we go

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<v Speaker 1>to two point four. So let's go what they say

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<v Speaker 1>the range is. Let's go in the middle of that range.

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<v Speaker 1>That would land me up from two hundred and eighty

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<v Speaker 1>calories up to six hundred and seventy two. Now, how

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<v Speaker 1>good is this? By the way, if you want to

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<v Speaker 1>expend more energy, you want to burn a few more calories,

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<v Speaker 1>you don't have lots of time. This is a good

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<v Speaker 1>thing to know what it's handy, especially if you live

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<v Speaker 1>near sand. If you don't, well, I'll give you another

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<v Speaker 1>option at the end. But what about this? What if

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<v Speaker 1>I decide that I want to burn more energy in

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<v Speaker 1>half the time than my normal five k walk around suburbia.

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<v Speaker 1>So now I do thirty minutes at the same speed

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<v Speaker 1>on soft sand. And if we're going off the top

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<v Speaker 1>number two point seven, so we go, Craig's walking for

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<v Speaker 1>two point five kilometers now, because it's only half the time,

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<v Speaker 1>he's doing the same thing. He's walking his eighty one

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<v Speaker 1>kilogram body. But now in thirty minutes he's burning three

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<v Speaker 1>hundred and seventy eight calories in half the time that

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<v Speaker 1>he is burning two hundred and eighty calories in an

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<v Speaker 1>hour on a hard surface. So more than double the

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<v Speaker 1>energy expenditure, even if we wind it back, double the

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<v Speaker 1>energy expenditure per unit of time. But even in that

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<v Speaker 1>half hour, three hundred and seventy eight calories versus two

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<v Speaker 1>hundred and eighty calories for that hour on a hard surface,

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<v Speaker 1>it's not only does it match the calories at almost

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<v Speaker 1>it's almost one hundred calories more. At the very least,

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<v Speaker 1>we can burn twice the amount of calories per unit

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<v Speaker 1>of time walking on a soft surface like sand. All right,

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<v Speaker 1>So here's my caveats though, here's my little Hey, think

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<v Speaker 1>about this, Be careful of this, because you know they're there.

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<v Speaker 1>I guess the downside, there aren't really too many downsides.

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<v Speaker 1>But if there are any downsides, I guess it's it's

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<v Speaker 1>not a stable surface obviously, So if somebody is really unstable,

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<v Speaker 1>and somebody has real, real balance issues, this might not

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<v Speaker 1>be a good idea. Having said that, like my eighty

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<v Speaker 1>five year old mum, she wouldn't be tearing the sand up.

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<v Speaker 1>But I know that my eighty five year old mum

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<v Speaker 1>could walk if we really just cruised, she could walk

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<v Speaker 1>for a collonnter in the soft sand. We don't have

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<v Speaker 1>to be walking at her normal foot pass speed, but

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<v Speaker 1>she could do it. So it's really I mean, obviously

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<v Speaker 1>it's an individual judgment call. And as I always say,

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<v Speaker 1>if you're not sure about any of this, check with

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<v Speaker 1>a health professional, fitness professional, doctor, whoever it is. I'm

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<v Speaker 1>just sharing some science and some thoughts and ideas with you,

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<v Speaker 1>and I guess the great thing is not that we

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<v Speaker 1>want anybody falling, but having a fall into soft sand

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<v Speaker 1>is way better than having a fall on concrete. We

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<v Speaker 1>don't want any fourth though, And think about now other

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<v Speaker 1>than the chloric benefits, or the energy expenditure benefits, and

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<v Speaker 1>the time saving benefits. There's a raft of other things

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<v Speaker 1>that walking in soft sand does for our body, including,

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<v Speaker 1>but not limited to, so there's a lot more there's

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<v Speaker 1>a lot more total muscle activation because we've got to

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<v Speaker 1>work harder because essentially the ground under us moves, right,

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<v Speaker 1>it's not like concrete that doesn't move. It moves, So

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<v Speaker 1>we've got to work harder. So there's more muscle activation

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<v Speaker 1>in our carbs and hamstrings, the muscle at the back quads,

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<v Speaker 1>muscles at the front of our thigh glues that's our

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<v Speaker 1>bum and those little kind of foot muscles, the intrinsic

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<v Speaker 1>foot muscles. Because we're walking on this unstable surface, we

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<v Speaker 1>need greater engagement and greater activation and use of all

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<v Speaker 1>of these muscles in the lower body. Benefit Number two

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<v Speaker 1>improved ankle and foot strength. Because the sand shifts under

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<v Speaker 1>our feet, we are forced to use all those stabilizing

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<v Speaker 1>muscles through our ankle through like you know, well, our

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<v Speaker 1>whole leg, but specifically for this ankle down, using our

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<v Speaker 1>stabilizer muscles much more than when we're out and about

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<v Speaker 1>walking up and down the hard surface in a supermarket

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<v Speaker 1>or something like that. For example, there are core benefits,

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<v Speaker 1>so your core being the muscles through your waist, and

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<v Speaker 1>really you know you've got stabilizing muscles through your whole body,

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<v Speaker 1>but your core works harder to stabilize your trunk with

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<v Speaker 1>each step when you are on an unstable surface, so

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<v Speaker 1>you can improve core strength. Of course, there's great cardiovascular

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<v Speaker 1>demand because your heart rate's got to climb because you

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<v Speaker 1>are working, because you're still doing the same speed if

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<v Speaker 1>you're based on this example i'm giving, but you're walking

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<v Speaker 1>on a surface that's much harder to walk on. Yes,

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<v Speaker 1>you're going to burn more energy per unit of time,

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<v Speaker 1>but yes, your heart rate's going to need to increase.

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<v Speaker 1>So as your heart rate increases walking the same speed.

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<v Speaker 1>So now instead of I'm just giving you an example,

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<v Speaker 1>let's say you're walking around suburbia. And let's say I'm

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<v Speaker 1>walking around Suburbia and my heart rate is one twenty

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<v Speaker 1>as I'm walking around the street at five k's per

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<v Speaker 1>per hour, which are not super fast for me, but

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<v Speaker 1>it's okay. I would say my heart rate would be

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<v Speaker 1>somewhere up around one sixty, maybe one fifty if I'm walking.

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<v Speaker 1>I'm just guessing, but it would be significantly higher work

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<v Speaker 1>walking on that unstable, soft, loose sand because of all

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<v Speaker 1>of the things I've mentioned before. So there's a real

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<v Speaker 1>fitness benefit, there's a real cardiovascular benefit, improved micro adjustments

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<v Speaker 1>for neuromuscular conditioning. So as as we step, as we

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<v Speaker 1>move through this less predictable landscape than concrete, our neuromuscular system,

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<v Speaker 1>all our nerves and nervous system in general, and all

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<v Speaker 1>of the muscles that are operationalized by these nerves get

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<v Speaker 1>a greater workout. So there are constant micro adjustments which

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<v Speaker 1>equal improved neuromuscular facilitation and coordination that happen in sand

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<v Speaker 1>that don't happen to the same level on a on

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<v Speaker 1>a hard surface. So also think about because we're increasing

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<v Speaker 1>or we're working all those stabilizer muscles, all those stabilizer

0:13:20.520 --> 0:13:26.960
<v Speaker 1>muscles through our hips, knees, an calls, everything, we over

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<v Speaker 1>time we will improve our balance and our coordination and

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<v Speaker 1>our stability, thereby potentially reducing falls and injury risks over time.

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<v Speaker 1>So you know, we're getting fitter, we're using more energy,

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<v Speaker 1>but also we're making our body more stable because we're

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<v Speaker 1>on an unstable surface. That's the thing. It's like, you

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<v Speaker 1>know how people do bench press on a ball? What's

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<v Speaker 1>the difference. One of the differences between bench pressing on

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<v Speaker 1>a ball and a hard bench or hard ish bench

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<v Speaker 1>thing is because you're on a ball, which is convex.

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<v Speaker 1>It is round, and it rolls and moves. It doesn't

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<v Speaker 1>sit like a chair. It just moves all over the joint.

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<v Speaker 1>Then you're lying. You've got part of your body on

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<v Speaker 1>the ball, but most of your body not on the ball.

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<v Speaker 1>Now you are an unstable surface, analogous to walking in sand.

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<v Speaker 1>You're on an unstable surface, which is called the ball.

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<v Speaker 1>And now you're not just using your chest muscles when

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<v Speaker 1>you're bench pressed, you're using all the stabilizer muscles in

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<v Speaker 1>your body because you're lying on something that's fucking rolling around.

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<v Speaker 1>In other words, working on something that's less stable or

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<v Speaker 1>completely unstable in the regards of a ball, means you

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<v Speaker 1>need to employ greater engagement of all your stabilizing muscles.

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<v Speaker 1>You do that for long enough, over time, you become

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<v Speaker 1>safer in an unstable environment. I guess. Also another benefit

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<v Speaker 1>is soft sand reduces ground reaction force, so, in other words,

0:15:04.080 --> 0:15:08.680
<v Speaker 1>less jarring, less impact, less of that negative kind of

0:15:08.800 --> 0:15:15.120
<v Speaker 1>force going through ligaments, tendons, joints, bones, skeleton. So walking

0:15:15.160 --> 0:15:20.760
<v Speaker 1>on a softer surface less stress on knees, hips, and spine,

0:15:21.520 --> 0:15:28.600
<v Speaker 1>and I guess can be can be ideal, maybe ideals

0:15:28.640 --> 0:15:33.360
<v Speaker 1>overdoing it may be suitable for rehab and low impact training.

0:15:33.400 --> 0:15:37.120
<v Speaker 1>And you know, I mean, there are so many, there

0:15:37.120 --> 0:15:40.200
<v Speaker 1>are so many benefits. I've got a few more, but

0:15:40.240 --> 0:15:43.520
<v Speaker 1>I won't, you know, I'll do one more. My last

0:15:43.520 --> 0:15:47.360
<v Speaker 1>one is my last two. Let's do that. So my

0:15:47.400 --> 0:15:51.120
<v Speaker 1>second last one is it improves muscular endurance because walking

0:15:51.160 --> 0:15:55.760
<v Speaker 1>on a soft surface like sand fatigue's muscles quicker, which

0:15:55.840 --> 0:16:01.000
<v Speaker 1>means you are now you're now tapping into, you know,

0:16:01.040 --> 0:16:05.200
<v Speaker 1>an energy system and a level of conditioning that you

0:16:05.240 --> 0:16:08.600
<v Speaker 1>don't when you're walking on the hard surface. So now

0:16:08.600 --> 0:16:11.360
<v Speaker 1>you've got to work harder, in other words, and walk harder.

0:16:12.240 --> 0:16:16.080
<v Speaker 1>So you're going to build not only fitness and strength

0:16:17.600 --> 0:16:22.600
<v Speaker 1>and muscular endurance, but you're making your body, you know,

0:16:23.160 --> 0:16:26.520
<v Speaker 1>more functional and operational. And the last one I just

0:16:26.600 --> 0:16:29.720
<v Speaker 1>mentioned in there, which is lower body strength. So walking

0:16:29.800 --> 0:16:33.600
<v Speaker 1>in soft sand builds functional lower body strength because you're

0:16:33.640 --> 0:16:38.160
<v Speaker 1>working harder. You're now working the amount of resistance that

0:16:38.240 --> 0:16:43.440
<v Speaker 1>you're working against when you're walking around suburbia is significantly

0:16:43.560 --> 0:16:47.560
<v Speaker 1>less than the resistance that you're working against when you're

0:16:47.600 --> 0:16:51.960
<v Speaker 1>on the soft sand. Now I'll get out of your hair.

0:16:52.200 --> 0:16:58.320
<v Speaker 1>But think about how we could correlate this idea, like

0:16:58.400 --> 0:17:02.480
<v Speaker 1>where we go, Well, there's walking, and there's walking, and

0:17:02.520 --> 0:17:05.119
<v Speaker 1>you go, is walking good or bad? Well in terms

0:17:05.119 --> 0:17:09.000
<v Speaker 1>of for fitness or strength, or aerobic endurance or muscular endurance,

0:17:09.080 --> 0:17:14.880
<v Speaker 1>or balance or coordination or neural conditioning or well, it's

0:17:14.920 --> 0:17:17.000
<v Speaker 1>not so much as walking good or bad. It's like,

0:17:17.119 --> 0:17:20.600
<v Speaker 1>let's talk about the different kinds of walking. You know.

0:17:20.640 --> 0:17:26.800
<v Speaker 1>We can talk about anything in this kind of light,

0:17:27.000 --> 0:17:29.440
<v Speaker 1>and it's like, well, maybe it's all about the thing,

0:17:29.560 --> 0:17:33.000
<v Speaker 1>or maybe it's about how we do the thing, you know,

0:17:33.000 --> 0:17:36.639
<v Speaker 1>And that could be anything from walking walking on a

0:17:36.680 --> 0:17:41.520
<v Speaker 1>hard surface to sand to having a conversation. Some conversations

0:17:41.560 --> 0:17:44.200
<v Speaker 1>are easy, some are hard. Maybe we have the easy

0:17:44.240 --> 0:17:46.840
<v Speaker 1>ones and avoid that. It's not about having a conversation.

0:17:46.960 --> 0:17:49.520
<v Speaker 1>It's about the context, it's about the topic. It's about

0:17:50.119 --> 0:17:52.639
<v Speaker 1>how important it is that we have that conversation with

0:17:52.760 --> 0:17:57.080
<v Speaker 1>that person. So think about things that you commonly do

0:17:58.280 --> 0:18:01.760
<v Speaker 1>which you could tweak or adjust, will modify there's one

0:18:01.880 --> 0:18:05.000
<v Speaker 1>variable that you can change in the doing of that thing.

0:18:05.920 --> 0:18:07.959
<v Speaker 1>Like for example, I'll give you a quick example, and

0:18:08.000 --> 0:18:10.000
<v Speaker 1>this is another gym when I apologize. But there's a

0:18:11.119 --> 0:18:12.760
<v Speaker 1>dude I was talking to recently. I see him in

0:18:12.800 --> 0:18:15.000
<v Speaker 1>the gym, and he always he always does the same thing.

0:18:15.040 --> 0:18:18.119
<v Speaker 1>For chest, he always bench presses, he always uses the bench,

0:18:18.119 --> 0:18:20.720
<v Speaker 1>and he always uses the bar bell. I reckon. I've

0:18:20.720 --> 0:18:23.760
<v Speaker 1>seen him for five years and he does that. He

0:18:23.840 --> 0:18:28.679
<v Speaker 1>does that for chest and not much else. And we

0:18:28.680 --> 0:18:31.360
<v Speaker 1>were talking and he was telling me that he's really stunted,

0:18:31.440 --> 0:18:35.320
<v Speaker 1>as in, he's not improving, he's not getting stronger. And

0:18:35.359 --> 0:18:37.680
<v Speaker 1>I said, well, why don't you do the exact same

0:18:37.840 --> 0:18:42.040
<v Speaker 1>movement bench press on a bench, but do it with dumbbells.

0:18:43.280 --> 0:18:45.880
<v Speaker 1>So all we're doing right there is changing one variable.

0:18:46.040 --> 0:18:48.960
<v Speaker 1>We're going. Well, now instead of two hands on a bar,

0:18:49.040 --> 0:18:52.199
<v Speaker 1>we've got two hands on two bars, two small bars.

0:18:52.720 --> 0:18:54.960
<v Speaker 1>And now we're doing a movement in a way that

0:18:55.000 --> 0:18:58.639
<v Speaker 1>we call unilateral. So we're lifting instead of doing say

0:18:58.680 --> 0:19:02.040
<v Speaker 1>one hundred kilos with two hands two arms, now we

0:19:02.160 --> 0:19:05.720
<v Speaker 1>may be doing fifty kilos each hand. That's a totally

0:19:05.760 --> 0:19:10.600
<v Speaker 1>different beast. That's a totally different beast. So think about

0:19:10.640 --> 0:19:13.720
<v Speaker 1>the things that you're currently doing that you can tweak

0:19:13.840 --> 0:19:16.440
<v Speaker 1>or adapt or adjust or do a slightly different way

0:19:17.520 --> 0:19:21.480
<v Speaker 1>for a much, much greater benefit. See you next time.