WEBVTT - What makes us yawn? 0:00:01.120 --> 0:00:04.280 Welcome to you Stuff you should Know from house Stuff 0:00:04.320 --> 0:00:12.640 Works dot com. Hey, and welcome to the podcast. I'm 0:00:12.720 --> 0:00:17.080 Josh Clark with Charles W. Chuck Bryant. You're getting comfy. Yeah, okay, 0:00:17.120 --> 0:00:18.920 well you put the two of us together and this 0:00:18.960 --> 0:00:21.840 is stuff you should know the podcast. Frank was squeaking. 0:00:22.600 --> 0:00:25.520 I thought I was in Frank. How was that, Frank? Yeah? 0:00:25.680 --> 0:00:29.920 I was sorry, I'm in Francine. Okay, sorry Francine, she squeaking. 0:00:30.160 --> 0:00:35.000 You are in, Frank? Who are you? Let's build a chair? Uh? 0:00:35.280 --> 0:00:36.960 People have never heard this from like, what are they 0:00:37.000 --> 0:00:40.000 talking about? They've already turned off. We name our chairs people? 0:00:40.640 --> 0:00:44.239 Then everyone he named cars, boats, and chairs. Yeah, a 0:00:44.280 --> 0:00:47.040 surprising amount of people named chairs. If you don't, you 0:00:47.040 --> 0:00:49.680 should be paranoid because people are talking about you. It's right, 0:00:50.320 --> 0:00:56.040 um Chuck, Yes, have you ever oscentated? I have. I've 0:00:56.080 --> 0:01:01.760 even uh pendiculated? Do you pendiculated before? I pendiculate every morning? 0:01:01.960 --> 0:01:06.279 You know what we we sound like? Um? People running 0:01:06.280 --> 0:01:10.000 for the Senate in nineteen fifties Florida. Yeah, there's like. 0:01:10.080 --> 0:01:13.720 Florida has a rich history of um like people running 0:01:13.760 --> 0:01:17.640 for political office using technical terms for things that sound 0:01:17.680 --> 0:01:20.839 way worse than they are to like smear their opponents. Yeah, 0:01:21.160 --> 0:01:23.200 there's this one guy who went and I can thank 0:01:23.280 --> 0:01:27.160 Uncle John and his bathroom readers um who went after 0:01:27.240 --> 0:01:29.920 his opponent and said that his sister was a thespian 0:01:29.959 --> 0:01:32.520 in New York and like all these people are like 0:01:32.560 --> 0:01:38.840 boo boo, and apparently like the smear campaign was successful. 0:01:38.920 --> 0:01:41.360 That wasn't the only one, but this guy used that 0:01:41.959 --> 0:01:44.440 couple of couple of technical terms. We should probably tell 0:01:44.440 --> 0:01:47.440 people what we're talking about, right, because you said you 0:01:47.560 --> 0:01:51.400 pendiculate every morning easily every morning, and that is a 0:01:51.480 --> 0:01:55.360 what that is a yawn and a stretch combined together, 0:01:55.440 --> 0:01:57.080 and as one of my favorite things to do in 0:01:57.080 --> 0:01:59.200 the morning, it is Did you did you see that 0:01:59.280 --> 0:02:02.320 painting of the It was a self portrait, the artist's 0:02:02.320 --> 0:02:04.120 self portrait. It sounded like it was from like the 0:02:04.520 --> 0:02:08.280 six or seventeenth century of him pendiculating. It's just as 0:02:08.320 --> 0:02:14.040 awesome oil painting of this, you know, Renaissance man stretching 0:02:14.040 --> 0:02:16.760 and yawning. Yeah. I love it because it feels good 0:02:17.600 --> 0:02:20.800 and it uh, it ties me to my pets, you know, 0:02:20.919 --> 0:02:24.080 because like I see them do it, they see me 0:02:24.160 --> 0:02:26.600 do it, and I'm kind of like, hey, we all eat, 0:02:26.800 --> 0:02:29.400 we all pee and poop, and we all pendiculate. My 0:02:29.440 --> 0:02:33.160 little cattle stretching yawn. My dogs will stretching yawn, and 0:02:33.200 --> 0:02:35.240 I will stretching you. So do you guys make one 0:02:35.280 --> 0:02:37.720 another stretching you on? You know, I'm gonna start looking 0:02:37.760 --> 0:02:39.880 out for that because I have not noticed that. But 0:02:39.919 --> 0:02:43.119 apparently yawning can be contagious to animals, right, Yeah, there's 0:02:43.160 --> 0:02:46.880 a fun little game you can dogs, dogs, supposedly chimps 0:02:47.120 --> 0:02:50.320 for sure, but probably not cats. I don't know. Yeah, 0:02:50.480 --> 0:02:52.120 just because it's not in here, it doesn't mean it's 0:02:52.160 --> 0:02:55.720 not true. Um, there's a fun little game you can 0:02:55.720 --> 0:02:57.760 play the next time you're hanging out with people if 0:02:57.800 --> 0:03:03.120 you feel like manipulating them biological level. Um, just yawn 0:03:03.880 --> 0:03:06.320 and just start paying attention to how many people yawn 0:03:06.360 --> 0:03:08.320 as a result, and it should start some sort of 0:03:08.400 --> 0:03:13.120 chain reaction among maybe of the people, because that's the 0:03:13.560 --> 0:03:19.160 that's the statistic of how many human adults yawn in 0:03:19.240 --> 0:03:23.480 reaction to seeing somebody on seeing video of somebody yawn, 0:03:24.360 --> 0:03:28.720 hearing about somebody yawning, reading about yawning, Like, how many 0:03:28.760 --> 0:03:31.320 times did you yawn while you read this article? A bunch, 0:03:31.400 --> 0:03:34.000 and people will probably yawn while listening to this. Supposedly 0:03:34.120 --> 0:03:36.520 it's pretty much impossible not to. Yeah, do you ever? 0:03:37.160 --> 0:03:41.200 Just just really shows how deeply disturbed I am. I 0:03:41.240 --> 0:03:44.720 will not I will suppress or cover up a yawn 0:03:45.080 --> 0:03:47.040 if someone else has made me on sometimes just so 0:03:47.080 --> 0:03:49.720 I don't give them the satisfaction. Oh yeah, I've done 0:03:49.720 --> 0:03:51.800 that before. Sometimes he was like, no, I'm not like 0:03:51.840 --> 0:03:54.320 just some stranger on elevator. They'll yawn and I'll just 0:03:54.320 --> 0:03:56.720 be like, Nope, not me, buddy, one of those people 0:03:56.720 --> 0:03:59.760 who don't realize that, like they're they're just your mortal 0:03:59.800 --> 0:04:02.440 and me for no real good reason, when in fact 0:04:02.440 --> 0:04:04.880 they really don't even know exists. They're like some guys 0:04:04.880 --> 0:04:10.040 on the elevator. Right, So yawning is involuntary um, And 0:04:11.320 --> 0:04:13.960 I've seen a range of of weeks that a fetus 0:04:14.040 --> 0:04:17.680 has been observed yawning from eleven to twenty and uh, 0:04:18.320 --> 0:04:20.800 that sort of disproves one of the well many things 0:04:20.880 --> 0:04:23.760 disproves one of the theories, which is that we yawned 0:04:23.760 --> 0:04:27.160 to oxygenate ourselves. Yeah, because a lot of people think 0:04:27.200 --> 0:04:31.160 that fetus is um breathe amniotic fluid in the womb, 0:04:31.200 --> 0:04:35.840 and that is absolutely not true that through the umbilical cord. Yeah, 0:04:35.839 --> 0:04:39.240 so they're not clearly not yawning to oxygenate themselves, right, 0:04:39.279 --> 0:04:41.880 And we'll debunk that with other things in a minute. Sure, Um, 0:04:41.920 --> 0:04:43.400 but that's still it is a little bit of a 0:04:43.440 --> 0:04:47.440 mystery though, Like, yeah, the other the other ideas for 0:04:47.520 --> 0:04:49.840 why we yawned don't really hold up in the fetus either. 0:04:50.279 --> 0:04:53.000 It feels like that's where the key to the mystery 0:04:53.279 --> 0:04:57.360 of yawning is going to be found in. All right, 0:04:58.080 --> 0:05:00.240 should we go there over some theories and well, hold on, first, 0:05:00.240 --> 0:05:02.600 you were saying it's involuntary. I found this one thing, chuck, 0:05:02.720 --> 0:05:07.359 that there's a type of paralysis like a lesion on 0:05:07.400 --> 0:05:11.479 the brain where you can still if you yawn, you 0:05:11.560 --> 0:05:15.040 still pendiculate. So like your paralyzed arm, if you yawn 0:05:15.080 --> 0:05:20.720 deep enough, will will raise, will rise. Yeah. Wow, pretty weird. Huh. Yeah, 0:05:20.800 --> 0:05:22.880 There's only been a few cases of it over like 0:05:23.040 --> 0:05:25.520 the last hundred and fifty years, but it's been documented 0:05:25.520 --> 0:05:28.800 in a number of different places. Yeah, I'll say that 0:05:28.839 --> 0:05:32.000 is such a surprise. Yeah, seriously, they're like, can I 0:05:32.040 --> 0:05:36.240 be tired more often? Um? So when you yawn, just 0:05:36.279 --> 0:05:39.880 physiologically speaking, you're gonna open your mouth, You're going to 0:05:39.960 --> 0:05:43.359 suck in air into your lungs. I read one place 0:05:43.360 --> 0:05:46.760 that you your eyes usually close. They did this big 0:05:46.760 --> 0:05:49.240 study and found that most time your eyes closed. But 0:05:49.320 --> 0:05:51.800 I don't think it's like all the time. You know 0:05:52.560 --> 0:05:55.400 that's sneezing you're thinking of. No, they did a study 0:05:55.440 --> 0:05:58.279 on on the eyes of the honor. Well, that's part 0:05:58.279 --> 0:06:01.560 of the yawn too, as far as queues go, Like, 0:06:01.640 --> 0:06:04.360 it's not just the mouth opening your eyes quint Yeah, 0:06:04.440 --> 0:06:06.920 And I found like the really good deep yawn, UM, 0:06:07.000 --> 0:06:10.440 my eyes will generally close. So you're gonna flex your 0:06:10.520 --> 0:06:13.400 your abs. It's good workout. It's gonna put your diet 0:06:13.400 --> 0:06:16.400 for RAM down. You're gonna still your lungs with air 0:06:17.000 --> 0:06:23.640 and then exhale, and that is a yawn stretch. You're pendiculating. UM. Also, 0:06:23.839 --> 0:06:29.359 parts of your brain become active, right, UM. Basically what 0:06:29.480 --> 0:06:31.240 happens when all of this, when you go through all 0:06:31.240 --> 0:06:37.520 this process, a bunch of neurotransmitters and dopamine are activated. 0:06:38.080 --> 0:06:41.560 And that is why a guy named Robert Provine thinks, well, 0:06:41.600 --> 0:06:45.680 he says that UM yawns are basically a part of 0:06:45.720 --> 0:06:49.719 a change from one state of arousal to another. Yeah, 0:06:49.839 --> 0:06:52.400 like I was asleep, now I'm awake, or I was 0:06:52.200 --> 0:06:55.880 alert now on board, or I was like just ho hum, 0:06:55.960 --> 0:06:59.120 and now I'm like in the mood because there you 0:06:59.160 --> 0:07:03.880 can yawn when you're sexually aroused. Mood, the mood, the mood, 0:07:04.680 --> 0:07:08.160 the Glenn Miller mood. That's that they had to call 0:07:08.200 --> 0:07:10.160 it back then, and that's what we have to call 0:07:10.200 --> 0:07:14.920 it today on this family friendly podcast. Um, what's going 0:07:14.920 --> 0:07:19.680 on to is physiologically speaking, is we are distributing, um, 0:07:19.720 --> 0:07:22.960 something called the surfactant, which sounds gross and it kind 0:07:22.960 --> 0:07:26.400 of is. It's a wedding agent, uh, to cote al 0:07:26.560 --> 0:07:31.280 veoli in the lungs. Um. But are they saying that's 0:07:31.320 --> 0:07:34.600 what happens or that's why it happens, that's what happens. Okay, 0:07:34.600 --> 0:07:37.720 they're not saying the reason is to cote the alboli 0:07:37.800 --> 0:07:40.840 with surfactant, Right, it could be. I mean, for all 0:07:40.880 --> 0:07:43.480 we know, know that we still have no idea of 0:07:43.520 --> 0:07:47.200 what function yawning provides. Same with the the yawning as 0:07:47.200 --> 0:07:49.600 a symbol of arousal or is a sign of arousal, 0:07:50.440 --> 0:07:52.440 They think that it's really just a byproduct of it, 0:07:52.960 --> 0:07:56.160 you know. Okay, but it explains why people who are 0:07:56.200 --> 0:07:58.640 nervous or dogs. I'm sure you've seen dogs who are 0:07:58.640 --> 0:08:01.520 nervous and they yawn in like that really kind of weird, 0:08:01.600 --> 0:08:05.280 unsettling way when they're super worked up. Yeah. Yeah, and 0:08:05.360 --> 0:08:08.200 humans too, you know, like people will yawn when they're nervous. 0:08:08.200 --> 0:08:11.000 It's it's it's it's a sign that you're in a 0:08:11.040 --> 0:08:14.480 state of arousal. And what that state of arousal is 0:08:14.560 --> 0:08:17.080 depends on the situation. Yeah. They point to Olympians who 0:08:17.160 --> 0:08:22.560 yawned before like a race and um, which Poopoo's one 0:08:22.640 --> 0:08:25.680 theory that we're gonna get to theory. Should we just 0:08:25.680 --> 0:08:27.640 get to the theories, Let's get to the theory. Pop. 0:08:27.760 --> 0:08:29.640 Is that theory though, that you have to be bored 0:08:29.760 --> 0:08:32.600 or you have to be sleepy retired? Yeah, like that. 0:08:32.760 --> 0:08:35.800 There's the boredom theory, and it's kind of been pretty 0:08:35.840 --> 0:08:39.880 fully shot down just by you know, just casual observation. 0:08:40.480 --> 0:08:44.880 There's also the physiological theory, which is that this is 0:08:44.920 --> 0:08:46.560 the one that I've always heard when I was younger, 0:08:46.640 --> 0:08:48.920 like why are you yawn Is because you need to 0:08:49.360 --> 0:08:53.400 your oxygen deprived or you have an abundance of carbon dioxide. 0:08:53.800 --> 0:08:55.880 So you're drawn in a bunch of oxygen and like 0:08:56.600 --> 0:08:59.360 putting out a bunch of carbon dioxide. That's why you're 0:08:59.400 --> 0:09:03.520 yawn and provine or provine that you mentioned. Yeah, he 0:09:03.600 --> 0:09:08.400 tested this one right, Yeah, pretty simply. He just said, okay, well, um, 0:09:08.600 --> 0:09:11.400 let's just give some athletes a bunch of oxygen and 0:09:11.440 --> 0:09:14.880 see if they um, if they breathe, if they yawn 0:09:14.960 --> 0:09:18.320 any less, And they didn't. He also um increased the 0:09:18.400 --> 0:09:24.720 carbon dioxide in the ambient air and people still kept yawning. Okay, 0:09:24.760 --> 0:09:27.480 so that one's gone where they didn't yawn anymore. Yeah, 0:09:27.600 --> 0:09:29.640 so you can put that to bed. Yeah. Plus also 0:09:29.679 --> 0:09:34.320 there was a terrible um hy proof associated with that 0:09:34.400 --> 0:09:38.880 hypothesis that that explains why people yawning groups, because when 0:09:38.880 --> 0:09:41.800 you have a big group, more carbon dioxide and less oxygen, 0:09:42.120 --> 0:09:45.400 and that's like you're all fighting over the oxygen, so 0:09:45.480 --> 0:09:48.400 you're they're yawning. Yeah, whoever can yawn the deepest lives? 0:09:48.840 --> 0:09:52.960 That don't sound right. Evolution um could play a part. 0:09:53.040 --> 0:09:56.040 Some people think that maybe we used to yawn. Took 0:09:56.040 --> 0:09:59.360 took with yawn to bare his teeth to intimidate folks 0:09:59.360 --> 0:10:04.120 around him. Um, or that it developed as a signal took. 0:10:04.120 --> 0:10:06.960 Took would give a signal to his mates that hey, 0:10:07.000 --> 0:10:10.080 we gotta we're hunting now and we need to go now. 0:10:10.520 --> 0:10:13.600 Gather would so I will yawn to tell you that 0:10:13.960 --> 0:10:17.760 like pre speech, right, Yeah, like a bird turning off 0:10:17.880 --> 0:10:20.960 the whole flock. Yeah, that makes a little bit of sense. 0:10:21.000 --> 0:10:23.640 But I still don't believe that one. I'm with the 0:10:23.679 --> 0:10:27.080 brain cooling theory that's like the most recent one. Yeah, 0:10:27.080 --> 0:10:28.520 and it seems to be the one that people are 0:10:28.520 --> 0:10:34.320 subscribing to. Yeah. Scientists generally are leaning toward the fact that, um, 0:10:34.360 --> 0:10:37.200 when our brains are warmer, yawning might cool it down. 0:10:37.280 --> 0:10:42.400 In A cool brain is a more whatever, a better brain. 0:10:42.440 --> 0:10:44.920 I guess I should say I just better for thinking 0:10:45.040 --> 0:10:48.199 I just yawned. Did you okay? I didn't see it. Well, 0:10:48.240 --> 0:10:50.959 I covered my mouth. You might have thought I was purpening. 0:10:51.840 --> 0:10:55.000 I think I did. Um. So, the brain cooling theory, 0:10:55.040 --> 0:10:58.520 that's the one that most people think is lately, that's 0:10:58.559 --> 0:11:03.640 the that's the explanation to your yeah. Um, And there's 0:11:03.679 --> 0:11:06.800 another piece of research that people are going into that 0:11:07.160 --> 0:11:12.640 um is the idea that contagious yawning is the result 0:11:12.840 --> 0:11:17.040 of empathy. Right that you that you empathize. The more 0:11:17.080 --> 0:11:19.840 you empathize with other people, the more susceptible you are 0:11:19.880 --> 0:11:22.520 to contagious yawning. And we said earlier that like I 0:11:22.520 --> 0:11:30.000 think of human adults, um are susceptible to contagious yawning, right, 0:11:30.120 --> 0:11:33.480 which the MythBusters confirmed by the way. Okay, so there 0:11:33.520 --> 0:11:35.960 is some sort of link between what we perceive as 0:11:36.040 --> 0:11:40.839 empathy and the susceptibility to yawning. When you see somebody 0:11:40.880 --> 0:11:43.320 else yawning or reading about yawning or whatever, I wonder 0:11:43.320 --> 0:11:45.240 if it's like a boy, that guy's tired and just 0:11:45.320 --> 0:11:47.640 let me make him feel better. Well, the pro vine again, 0:11:47.720 --> 0:11:52.800 he's like really into yawning research. Um. He he has 0:11:52.840 --> 0:11:56.079 done m r I scans where he shows I guess 0:11:56.120 --> 0:11:58.960 pictures of people yawning or talks about yawning and you 0:11:59.000 --> 0:12:02.319 know they yawned. Um. And when they do, he says 0:12:02.360 --> 0:12:06.240 that mere neurons go off. Right, So are are mere 0:12:06.280 --> 0:12:09.640 neurons are activated when you see somebody else yawned? And 0:12:09.800 --> 0:12:14.400 apparently that triggers then. But people take it a step 0:12:14.440 --> 0:12:18.000 further in this quest to prove that empathy and contagious 0:12:18.080 --> 0:12:22.880 yawning or you know, want work hand in hand and saying, well, 0:12:22.920 --> 0:12:26.080 then people with autism that that they shouldn't be able 0:12:26.120 --> 0:12:29.680 to be susceptible to contagious yawning because they're known to 0:12:29.920 --> 0:12:33.520 have less empathy, right, they have trouble connecting with others 0:12:33.640 --> 0:12:36.840 or um, they have trouble developing what's called the theory 0:12:36.880 --> 0:12:40.559 of mind about other people. Um. And there have been 0:12:40.600 --> 0:12:44.840 a lot of studies about whether or not people who 0:12:44.920 --> 0:12:50.760 are people who have autism are contagious too susceptible the 0:12:50.760 --> 0:12:55.240 contagious yawning, and it's it's it's been proven, not proven, 0:12:55.280 --> 0:13:00.480 but at least the data says that the more, uh, 0:13:01.040 --> 0:13:05.320 the the stronger your autism, the less you will yawn, 0:13:06.280 --> 0:13:09.360 even though uh, they will yawn when someone is pretending 0:13:09.360 --> 0:13:12.840 to yawn. Was that what it was? Yeah? I think 0:13:12.840 --> 0:13:16.520 it said that, Um, when they were watching video of 0:13:16.600 --> 0:13:20.520 people just moving their mouths, then non autistic kids yawned 0:13:20.559 --> 0:13:24.280 more than kids with autism when it was really yawning. 0:13:24.400 --> 0:13:27.440 Does that make sense? Yes, Well, hold on before we 0:13:27.440 --> 0:13:30.199 get to that, um, because this is like a whole 0:13:30.240 --> 0:13:33.439 thing to me, the idea that if you have autism, 0:13:33.480 --> 0:13:37.640 you're not susceptibly continuous yawning. Let's let's first I have 0:13:37.720 --> 0:13:47.719 a message break from our sponsor. Okay, Josh, So I 0:13:47.760 --> 0:13:50.920 believe we were talking about autism and yawning, which is 0:13:51.360 --> 0:13:53.800 I just learned a thing for you. Well, yeah, you 0:13:53.840 --> 0:13:57.720 said that there was. They have found that if you 0:13:57.840 --> 0:14:00.079 have been diagnosed with autism, you're less likely to be 0:14:00.160 --> 0:14:04.640 susceptible and contagious yawning. And they found that the higher 0:14:05.160 --> 0:14:08.880 on the autism spectrum you fall, the less lucky would 0:14:08.880 --> 0:14:11.040 you would even be right, Yeah, which would suggest that 0:14:11.080 --> 0:14:13.880 there is that link because they've tied they there's a 0:14:13.880 --> 0:14:18.480 link between uh, empathy and an autism and empathy and 0:14:18.520 --> 0:14:22.880 contagious yawning. So this autism and studying kids with autism 0:14:22.920 --> 0:14:26.120 is kind of like the fulkrum. So yeah, it just 0:14:26.160 --> 0:14:30.040 seems to me to be kind of um, I don't know, 0:14:30.120 --> 0:14:32.200 I don't I don't buy all the studies that have 0:14:32.280 --> 0:14:35.720 been carried out. Another studies kind of contradicted, like they 0:14:36.800 --> 0:14:39.360 other studies have shown that like kids with autism focus 0:14:39.440 --> 0:14:42.120 on people's mouths rather than their eyes. So maybe they're 0:14:42.120 --> 0:14:44.720 missing the cue. Member. We said that your eyes scrunched 0:14:44.960 --> 0:14:48.760 to like a yawn is not just people opening their mouths. 0:14:49.440 --> 0:14:53.680 It has all these other facial characteristics that might trigger 0:14:54.320 --> 0:14:57.000 a yawn and another person. So maybe kids with autism 0:14:57.080 --> 0:15:01.040 are simply missing that could be skewed by other factors. 0:15:01.080 --> 0:15:03.240 It could be plus. I just remember when I wrote 0:15:03.240 --> 0:15:08.320 this article like years back, I was kind of like, yeah, 0:15:08.520 --> 0:15:12.000 it's just it seems just slightly off, Like, yeah, we 0:15:12.120 --> 0:15:14.080 got a good gut though. Well thanks man, I've been 0:15:14.080 --> 0:15:19.120 working on it so bad. Um. Well, we should also 0:15:19.160 --> 0:15:21.160 mention too that this goes back a long way, like 0:15:22.160 --> 0:15:26.400 I believe, was it Hippocrates, Yeah, was the first person 0:15:26.520 --> 0:15:31.360 to start sort of postulating ideas, and he was like, uh, 0:15:31.400 --> 0:15:33.600 he thought it was fever related, like sickness. It could 0:15:33.600 --> 0:15:36.400 help cure you. So I got a fever and the 0:15:36.440 --> 0:15:40.560 only prescription is more yawning. That's why here's the father 0:15:40.600 --> 0:15:42.760 of medicine. That's right, because he was the first guy 0:15:42.800 --> 0:15:45.760 to just start saying stuff. But you know that was 0:15:46.320 --> 0:15:49.680 pretty quickly disproving, right. But um, the idea that yawning 0:15:50.040 --> 0:15:55.200 has something to do with UM increasing our alertness and awareness, 0:15:55.840 --> 0:15:57.760 which is kind of one of the current views of 0:15:57.840 --> 0:16:01.800 yawning UM that dates back to the seventeenth and eighteen centuries. Yeah, 0:16:01.840 --> 0:16:07.960 well it increases your heart rate during inhalation only, um, 0:16:07.960 --> 0:16:11.720 not during uh the I think it it It increases 0:16:11.760 --> 0:16:13.600 and then levels off and then just drops back down 0:16:13.600 --> 0:16:16.160 to normal pretty quickly. I got you. Yeah, but up 0:16:16.200 --> 0:16:19.120 to like thirty beats per minute increase. Right, Yeah. I 0:16:19.160 --> 0:16:22.120 read a real heavy article on the study that really 0:16:22.120 --> 0:16:24.040 just made my eyes cross. But that was a long 0:16:24.040 --> 0:16:26.280 and short of it, right, But that's one that dealt 0:16:26.280 --> 0:16:28.760 with the eyes. Like they really measured all kinds of stuff. 0:16:29.320 --> 0:16:32.120 And when we said that fetus is from eleven to 0:16:32.200 --> 0:16:36.120 twenty weeks of development yawn in utero And did you 0:16:36.160 --> 0:16:41.600 see any of like the four d ultrasounds. Fetus is yawning? 0:16:41.840 --> 0:16:44.440 Is it adorable? It's pretty cute, but it's also weird 0:16:44.440 --> 0:16:46.840 at the same time because they're not fully developed. It's 0:16:46.880 --> 0:16:50.080 it's like, oh you, it's like a little baby platypus 0:16:50.240 --> 0:16:53.840 kind of um, but you have to be around age 0:16:53.880 --> 0:16:59.400 four before you um can Uh, you're susceptibly contagious yawning. Yeah, 0:17:00.080 --> 0:17:03.160 it's there any way to put it besides susceptible, the 0:17:03.200 --> 0:17:05.320 contagious yawning, I don't think so. Why do you feel 0:17:05.320 --> 0:17:07.680 like You've said that like a lot, and I've paid 0:17:07.720 --> 0:17:10.679 trouble with it every time. Uh. There's another couple of 0:17:10.720 --> 0:17:14.000 researchers who a couple of years ago, um Andrew Gallop 0:17:14.080 --> 0:17:18.880 and Omar Tansi Elda car Uh. They found that outside 0:17:18.880 --> 0:17:21.880 temperature could affect the amount of yawning. So if it's 0:17:21.880 --> 0:17:27.600 warmer than usual, then you're gonna yawn less frequently because um. 0:17:28.080 --> 0:17:32.440 Their explanation is to outside airs useless to the organism 0:17:32.440 --> 0:17:34.600 because it doesn't need to suck in more oxygen. I 0:17:34.640 --> 0:17:37.119 don't get how the temperature would affect that though. Well, 0:17:37.359 --> 0:17:40.400 if it's warmer temperature and you're using the cooler air 0:17:40.560 --> 0:17:45.040 to cool your brain, if it's warmer than the temperature 0:17:45.040 --> 0:17:47.720 of your brain, then it's okay, that makes sense. Yeah, 0:17:48.600 --> 0:17:51.080 all right, Well they had other tests though, that's that 0:17:51.160 --> 0:17:55.720 showed that the amount of yawning increased both when outside 0:17:55.720 --> 0:17:59.280 temperature and the temperature of the brain increase. Yeah, so 0:17:59.359 --> 0:18:01.720 all over the place, No, no one knows anything about 0:18:01.760 --> 0:18:07.880 yawning except Robert Provine, the foremost leading authority. But well 0:18:07.880 --> 0:18:11.160 he's proven that like seeing your hearing about somebody yawning, 0:18:11.359 --> 0:18:14.520 it triggers your mirror neurons. So yeah, I think somebody 0:18:14.520 --> 0:18:17.800 should do a documentary on these people that become obsessed 0:18:17.840 --> 0:18:23.280 with yawns. No, just like a certain small thing. So 0:18:23.440 --> 0:18:27.400 you're yawning right now? Um, and that was unsatisfying because 0:18:27.400 --> 0:18:29.600 you made me laugh in the middle of it. I think, 0:18:29.640 --> 0:18:31.480 like fast chief and out of control. I've talked about 0:18:31.480 --> 0:18:34.320 it before. Errol Morris's documentary sort of did that, but 0:18:34.960 --> 0:18:37.760 that was about like studying naked mole rats or lion 0:18:37.800 --> 0:18:41.600 taming or um. It's it called when you clip the 0:18:41.600 --> 0:18:46.480 hedges indicty gardening. But someone they should do things that 0:18:46.520 --> 0:18:49.119 are even more like mundane, like this dude that has 0:18:49.160 --> 0:18:52.760 dedicated as life to yawning. I just think they'd be interesting, 0:18:52.800 --> 0:18:57.240 Like what drives provine? Figure this out? When it really 0:18:57.280 --> 0:18:59.520 doesn't matter, you know what I'm saying? Well, I don't know, 0:18:59.600 --> 0:19:02.080 because and it's not a yawning he he frequently is 0:19:02.160 --> 0:19:06.280 cited as a yawning expert. He's an evolutionary biologist, so 0:19:06.400 --> 0:19:09.600 like but yawning, since it's involuntary, and since you find 0:19:09.640 --> 0:19:13.160 it in all vertebrates, it kind of gives some peek 0:19:13.200 --> 0:19:16.760 into our evolutionary past. Plus he probably just loves a 0:19:16.760 --> 0:19:19.320 good mystery. Sure. He had a great quote too. We 0:19:19.320 --> 0:19:21.919 were talking about how arousal yawning is a is a 0:19:21.960 --> 0:19:24.959 byproduct of a state of arousal. He was saying that 0:19:25.040 --> 0:19:30.560 he believes that um, yawns and orgasms share a neuro 0:19:30.840 --> 0:19:35.159 behavioral heritage. Yeah, so like they're possibly rooted in the 0:19:35.240 --> 0:19:38.640 same behavior. Like remember you said it yourself, when you pendiculate, 0:19:38.720 --> 0:19:43.800 it feels good. Same you know with the orgasm. So 0:19:44.000 --> 0:19:46.920 I've heard those feel great, right, So possibly if you 0:19:47.240 --> 0:19:51.560 trace the lineage of this behavior back far enough, you'd say, like, oh, 0:19:51.600 --> 0:19:54.720 they both came from when humans used to stubb their toe. 0:19:54.960 --> 0:19:57.720 They thought it was awesome, and then the things diverged 0:19:57.840 --> 0:20:03.480 into these two things interesting, into uh, yawning and what 0:20:03.560 --> 0:20:07.959 happens when you're in the mood, the Glenn Miller mood. Right, Ah, 0:20:08.080 --> 0:20:10.879 you got anything else? No, man, that is yawning forever 0:20:11.359 --> 0:20:15.679 until somebody figures it out. It's a mystery, Yeah, and 0:20:15.720 --> 0:20:17.159 I kind of like it like that. But at the 0:20:17.160 --> 0:20:21.160 same time, I think it's it's so amorphous that there's 0:20:21.240 --> 0:20:23.800 no no one has a clue. Like sometimes we've talked 0:20:23.800 --> 0:20:27.320 about stuff that science couldn't fully explain, but we almost 0:20:27.320 --> 0:20:29.760 always like pick a theory like this is the one. 0:20:30.280 --> 0:20:33.240 It just hasn't been proven yet, right, this one. I 0:20:33.240 --> 0:20:34.960 don't feel like we did that, Like we both like 0:20:35.040 --> 0:20:37.119 the brain cooling one, but it was kind of discarded. 0:20:38.119 --> 0:20:42.240 And I'm definitely gonna keep an eye on my pets. Um. 0:20:42.280 --> 0:20:44.959 But then I don't know if, like, can you induce 0:20:45.000 --> 0:20:48.200 that just by noticing more, you know, you know what 0:20:48.200 --> 0:20:50.240 I'm saying, Or maybe what I'll do is I'll watch 0:20:50.240 --> 0:20:53.399 Emily around the pets. No one's in on it, Just 0:20:53.480 --> 0:20:58.520 be careful you don't accidentally change their behaviors by observing 0:20:58.560 --> 0:21:02.960 its Berg's Buckley farts every time he stretches too. And see, 0:21:03.000 --> 0:21:06.040 that's what I'm saying. We'll see if Emily farts while 0:21:06.119 --> 0:21:11.040 she fandiculates, right, that'll be the death's nice um. So okay, 0:21:11.200 --> 0:21:13.800 I think if you guys want to learn more about yawning, 0:21:14.359 --> 0:21:16.399 you can type that word into the search bar how 0:21:16.440 --> 0:21:19.240 stuff works dot com. And since I said search bart 0:21:19.320 --> 0:21:22.640 means it's time for listener mail. Uh not quite yet, 0:21:22.640 --> 0:21:25.160 my friend. We have a quick word from our sponsor again, 0:21:25.280 --> 0:21:27.240 and then we will we have a great listener mail 0:21:27.280 --> 0:21:30.439 though about Rodriguez. So oh yeah, yeah, okay, all right, 0:21:30.520 --> 0:21:34.679 so this is a time for message break, okay, and 0:21:34.760 --> 0:21:38.520 now it's time for listener mail. Huh. Yes, And I 0:21:38.600 --> 0:21:40.720 already gave it away because I wanted people to stick 0:21:40.760 --> 0:21:43.760 around for this. And it is called I Hang Out 0:21:43.760 --> 0:21:49.000 with Rodriguez. So we mentioned Rodriguez, the singer songwriter from 0:21:49.000 --> 0:21:54.520 the sixties who, unbeknownst to him, was a huge, huge 0:21:54.600 --> 0:21:58.520 hit in South America and no, South Africa. What did 0:21:58.480 --> 0:22:03.440 I say, South American? Such an idea South Africa and 0:22:03.480 --> 0:22:06.320 then down there once on the left, ones on the right, 0:22:07.080 --> 0:22:11.280 and then later in Australia and um, so we covered 0:22:11.280 --> 0:22:13.480 that in our Apartheide podcast and you can see the 0:22:13.520 --> 0:22:17.960 documentary searching for Sugarman's Super Interesting. Which one, uh best 0:22:17.960 --> 0:22:20.800 documentary this year? Right? Yeah? Yeah? Have you seen How 0:22:20.840 --> 0:22:23.280 to Survive a Plague? That was up for Best Picture too, 0:22:23.960 --> 0:22:27.760 best Documentary? Yes, it was good, Yeah, it was really good. 0:22:27.960 --> 0:22:33.639 Um it was. It's about the early gay like AIDS 0:22:33.640 --> 0:22:37.600 awareness movement and like it's just what they were up against. 0:22:37.720 --> 0:22:41.080 His mind boggling, you know, like the society was just 0:22:41.160 --> 0:22:45.240 kind of like, no, God's punishing you. Good luck with it, pal, jeez. Yeah, 0:22:45.320 --> 0:22:50.120 that's really something saw our friends Steward of Superhuman Happiness. 0:22:50.119 --> 0:22:53.000 Who are they're fans of the show? He scored the soundtrack. 0:22:53.240 --> 0:22:54.879 Oh no, he did a really good job with it, 0:22:54.960 --> 0:22:57.160 So you want to check that out. Um. I saw 0:22:57.200 --> 0:23:01.200 another trailer the other day for a document are about 0:23:01.480 --> 0:23:05.879 this family of Jews who hid in a underground for 0:23:05.960 --> 0:23:09.199 a year and a half during World War Two and 0:23:09.240 --> 0:23:12.480 they never told their story because they didn't think anyone 0:23:12.600 --> 0:23:15.440 believe it. In this caving cave diver not cave diver, 0:23:15.560 --> 0:23:19.800 caving guy found these human objects and traced them back 0:23:19.800 --> 0:23:22.400 to this family and they came out like the surviving ones, 0:23:22.480 --> 0:23:27.080 like told their story of his amazing thing. It's called 0:23:27.200 --> 0:23:30.360 No Place on Earth and uh, it's coming out soon. 0:23:30.400 --> 0:23:32.960 It looks awesome. Right. Well, there you go, everybody. We 0:23:33.040 --> 0:23:37.560 like to recommend documentaries around here. Okay, Rodriguez, guys. It's 0:23:37.600 --> 0:23:39.600 so fun to hear you talk about Rodriguez because I've 0:23:39.600 --> 0:23:41.360 known him a little bit there and there. I'm glad 0:23:41.400 --> 0:23:45.040