1 00:00:01,920 --> 00:00:06,520 Speaker 1: Welcome to brain Stuff production of I Heart Radio. Hey 2 00:00:06,559 --> 00:00:09,400 Speaker 1: brain Stuff, Lauren bog Obam here with a classic episode 3 00:00:09,400 --> 00:00:13,280 Speaker 1: from the brain Stuff archives. This one was certainly a 4 00:00:13,280 --> 00:00:16,880 Speaker 1: relief to me. It's about a study that revealed that, 5 00:00:17,040 --> 00:00:21,160 Speaker 1: although good sleep is always important, you can indeed catch 6 00:00:21,239 --> 00:00:23,960 Speaker 1: up on sleep by sleeping in on your days off. 7 00:00:24,560 --> 00:00:29,880 Speaker 1: I'll let previous Lauren explain. Hey brain Stuff, Lauren bog 8 00:00:29,920 --> 00:00:33,240 Speaker 1: Obam here, good news for people who use their days 9 00:00:33,280 --> 00:00:36,199 Speaker 1: off as they are intended to rest up after a 10 00:00:36,240 --> 00:00:39,640 Speaker 1: busy week. It turns out those compensatory z s are 11 00:00:39,760 --> 00:00:43,360 Speaker 1: far more beneficial than previously thought, according to a Swedish 12 00:00:43,360 --> 00:00:46,559 Speaker 1: study published in in April issue of the Journal of 13 00:00:46,560 --> 00:00:49,680 Speaker 1: Sleep Research. The study looked at more than forty three 14 00:00:49,720 --> 00:00:53,360 Speaker 1: thousand people who participated in the Swedish National March cohort, 15 00:00:53,520 --> 00:00:58,560 Speaker 1: which began follow up for every subject continued until they died, 16 00:00:58,720 --> 00:01:03,160 Speaker 1: moved away, or to number when the study officially closed. 17 00:01:03,880 --> 00:01:06,759 Speaker 1: The researchers for the sleep study pulled relevant data from 18 00:01:06,760 --> 00:01:10,119 Speaker 1: the cohort questionnaire about basic sleep habits like how many 19 00:01:10,120 --> 00:01:13,520 Speaker 1: hours approximately participants sleep on a workday night, as well 20 00:01:13,560 --> 00:01:15,920 Speaker 1: as how many hours they snooze per night on days 21 00:01:15,959 --> 00:01:19,320 Speaker 1: off of work response increments ranged from less than five 22 00:01:19,360 --> 00:01:23,120 Speaker 1: hours to greater than nine hours. Previous studies have shown 23 00:01:23,120 --> 00:01:26,480 Speaker 1: that people who consistently sleep too little short sleep is 24 00:01:26,480 --> 00:01:29,080 Speaker 1: defined as five hours or less a night, or too 25 00:01:29,200 --> 00:01:32,240 Speaker 1: much long sleep is nine or more hours per night, 26 00:01:32,600 --> 00:01:35,360 Speaker 1: have higher mortality rates than people who fall into the 27 00:01:35,400 --> 00:01:38,880 Speaker 1: Goldilocks zone in between getting just the right amount of 28 00:01:38,920 --> 00:01:42,479 Speaker 1: sleep every night. However, the authors of the study point 29 00:01:42,520 --> 00:01:45,000 Speaker 1: out that few, if any, of those studies have asked 30 00:01:45,040 --> 00:01:49,160 Speaker 1: participants to differentiate between week day and weekend sleep, which 31 00:01:49,240 --> 00:01:52,320 Speaker 1: makes a big difference, they wrote, in the current study, 32 00:01:52,680 --> 00:01:55,720 Speaker 1: because there are five week days and two weekend days, 33 00:01:56,000 --> 00:01:58,720 Speaker 1: it is likely that self reports of typical sleep duration 34 00:01:58,880 --> 00:02:02,720 Speaker 1: more strongly reflect weekday sleep. Thus, it is of interest 35 00:02:02,800 --> 00:02:06,840 Speaker 1: to investigate the relationship between weekend sleep duration and mortality, 36 00:02:07,120 --> 00:02:09,920 Speaker 1: as well as the different patterns of sleep duration between 37 00:02:10,040 --> 00:02:14,160 Speaker 1: week day and weekend sleep. When the researchers looked at 38 00:02:14,160 --> 00:02:17,600 Speaker 1: all of the data, findings were consistent with previous conclusions 39 00:02:17,639 --> 00:02:20,919 Speaker 1: of increased mortality if both week day and weekend sleep 40 00:02:20,960 --> 00:02:24,600 Speaker 1: are short or when both are long. However, they wrote, 41 00:02:24,880 --> 00:02:28,640 Speaker 1: when weekend sleep is extended after short weekday sleep, no 42 00:02:28,720 --> 00:02:32,320 Speaker 1: association with mortality is seen. We suggest that this may 43 00:02:32,360 --> 00:02:37,600 Speaker 1: reflect positive effects of compensatory sleep. Experts have long advised 44 00:02:37,639 --> 00:02:39,720 Speaker 1: people to get up at the same time each day, 45 00:02:39,880 --> 00:02:42,919 Speaker 1: even on weekends, as a long term strategy for getting 46 00:02:42,960 --> 00:02:46,240 Speaker 1: better sleep each night. The theory is that yo yoing 47 00:02:46,280 --> 00:02:50,680 Speaker 1: sleep habits disturb your circadian rhythms. Dr David Ding's was 48 00:02:50,760 --> 00:02:53,160 Speaker 1: not involved in this sleep study, but he's the chief 49 00:02:53,160 --> 00:02:56,040 Speaker 1: of the Division of Sleep and Chronobiology at the University 50 00:02:56,040 --> 00:02:59,959 Speaker 1: of Pennsylvania Pearlman School of Medicine. He told Time Magazine, 51 00:03:00,480 --> 00:03:02,840 Speaker 1: the real question is whether there is in fact a 52 00:03:02,919 --> 00:03:06,120 Speaker 1: build up of deficit or biological changes that are gradual 53 00:03:06,200 --> 00:03:10,280 Speaker 1: over time, even though you get recovery sleep. So while 54 00:03:10,360 --> 00:03:12,480 Speaker 1: this study is great news for those of us who 55 00:03:12,520 --> 00:03:15,600 Speaker 1: like to sleep in on days off, many sleep experts 56 00:03:15,639 --> 00:03:17,959 Speaker 1: say more studies need to be done on this subject. 57 00:03:23,880 --> 00:03:26,600 Speaker 1: Today's episode is based on the article Yes you can 58 00:03:26,720 --> 00:03:29,360 Speaker 1: catch up on your sleep exclamation point on how stuff 59 00:03:29,400 --> 00:03:32,079 Speaker 1: Works dot Com, written by Leah Hoyt. Brain Stuff is 60 00:03:32,120 --> 00:03:34,120 Speaker 1: production of I Heart Radio in partnership with how stuff 61 00:03:34,120 --> 00:03:36,200 Speaker 1: Works dot Com, and it is produced by Tyler Clang. 62 00:03:36,640 --> 00:03:39,080 Speaker 1: Perform more podcasts from my Heart Radio. Visit the I 63 00:03:39,120 --> 00:03:41,760 Speaker 1: heart radio, app, Apple podcasts, or wherever you listen to 64 00:03:41,840 --> 00:03:42,640 Speaker 1: your favorite shows.