Are naps actually good for us? | Sleeping with Science

1,107,145 views ใƒป 2021-11-17

TED


ืื ื ืœื—ืฅ ืคืขืžื™ื™ื ืขืœ ื”ื›ืชื•ื‘ื™ื•ืช ื‘ืื ื’ืœื™ืช ืœืžื˜ื” ื›ื“ื™ ืœื”ืคืขื™ืœ ืืช ื”ืกืจื˜ื•ืŸ.

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Transcriber:
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Are we designed to nap during the day?
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ืชืจื’ื•ื: lia green ืขืจื™ื›ื”: Ido Dekkers
ื”ืื ืื ื• ืืžื•ืจื™ื ืœื ืžื ื ื‘ืžื”ืœืš ื”ื™ื•ื?
00:03
[Sleeping With Science]
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[ืœื™ืฉื•ืŸ ืขื ื”ืžื“ืข]
00:07
Most people aim to get their recommended seven to nine hours of sleep
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ืžืจื‘ื™ืช ื”ืื ืฉื™ื ืžืชื›ื ื ื™ื ืœื™ืฉื•ืŸ ื›ืฉื‘ืข ืขื“ ืชืฉืข ืฉืขื•ืช
00:12
in one long stretch at night.
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ื‘ืžื”ืœืš ืฉื™ื ืช ืœื™ืœื” ืžืžื•ืฉื›ืช.
00:14
And the technical term for this is โ€œmonophasic sleep.โ€
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ื”ืžื•ืฉื’ ื”ื˜ื›ื ื™ ืœืฉื™ื ื” ื›ื–ื• ื”ื•ื โ€œืฉื™ื ื” ืžื•ื ื•ืคืื–ื™ืช.โ€
00:17
In other words, a single bout of sleep at night.
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ื‘ืžื™ืœื™ื ืื—ืจื•ืช,ื™ื—ื™ื“ืช ื–ืžืŸ ืื—ืช ืฉืœ ืฉื™ื ื”.
00:21
However,
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ืืš,
00:22
we may not have been programmed to sleep in this way.
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ื™ื›ื•ืœ ืœื”ื™ื•ืช ืฉืื ื• ืœื ืžืกื•ื’ืœื™ื ืœื™ืฉื•ืŸ ื‘ืฆื•ืจื” ื›ื–ื•.
00:26
Now I'm sure you've had that experience
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ืื ื™ ื‘ื˜ื•ื— ืฉื—ื•ื•ื™ืชื ื—ื•ื•ื™ื” ืฉื›ื–ื•
00:28
of a drop in your alertness in the afternoon,
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ืฉืœ ื™ืจื™ื“ื” ื‘ืจืžื•ืช ื”ืขืจื ื•ืช ืฉืœื›ื ื‘ืฉืขื•ืช ื”ืฆื”ืจื™ื™ื,
00:32
where you start to feel a little sleepy.
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ื•ืืชื ืžืชื—ื™ืœื™ื ืœื”ืจื’ื™ืฉ ื˜ื™ืคื” ื™ืฉื ื•ื ื™ื.
00:34
And you can also see it in other people as well,
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ื•ืืชื ื™ื›ื•ืœื™ื ืœื–ื”ื•ืช ื–ืืช ื’ื ื‘ืื ืฉื™ื ืื—ืจื™ื,
00:37
as their heads begin sort of bobbing up and down
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ื›ืืฉืจ ื”ืจืืฉื™ื ืฉืœื”ื ืžืชื—ื™ืœื™ื ืœื”ืชื ื“ื ื“ ืžืขืœื” ื•ืžื˜ื”
00:40
during afternoon meetings.
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ื‘ืžื”ืœืš ื™ืฉื™ื‘ื•ืช ืฆื”ืจื™ื™ื ื‘ืขื‘ื•ื“ื”.
00:41
Now you may think this afternoon drop in your alertness
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ืื•ืœื™ ืชื—ืฉื‘ื• ืฉื”ื™ืจื™ื“ื” ื‘ืจืžืช ื”ืขืจื•ืช ื‘ืฉืขื•ืช ื”ืฆื”ืจื™ื™ื
00:46
is because of a big lunch,
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ื ื•ื‘ืขืช ืžืื›ื™ืœืช ืืจื•ื—ืช ืฆื”ืจื™ื™ื ื’ื“ื•ืœื”,
00:48
but in actual fact,
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ืืš ืœืžืขืฉื”,
00:50
it seems to be hardwired.
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ื–ื” ื—ืœืง ืžื”ื—ื™ื•ื•ื˜ ื”ื ื•ื™ืจื•ืœื•ื’ื™ ืฉืœื ื•.
00:52
Because if I place electrodes on your head,
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ื‘ื’ืœืœ ืฉืื ืืฉื™ื ืืœืงื˜ืจื•ื“ื•ืช ืขืœ ื”ืจืืฉ ืฉืœื›ื,
00:55
there is a reliable, preprogrammed drop
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ื™ืฉื ื” ื™ืจื™ื“ื” ืžื•ื›ืจืช ื•ืžื—ื•ืฉื‘ืช
00:58
in your brainโ€™s alertness during the afternoon.
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ื‘ืจืžืช ืขืจื ื•ืช ื”ืžื•ื— ืฉืœื›ื ื‘ืฉืขื•ืช ืื—ืจ ื”ืฆื”ืจื™ื™ื.
01:01
And it happens to most of us somewhere between the one to four pm mark.
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ื™ืจื™ื“ื” ื–ื• ืžืชืจื—ืฉืช ืืฆืœ ื›ื•ืœื ื• ื‘ื™ืŸ ืื—ืช ืœืืจื‘ืข ืื—ืจ ื”ืฆื”ืจื™ื™ื.
01:05
What this suggests
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ื–ื” ืื•ืžืจ
01:06
is that we may have been designed to sleep in a biphasic pattern,
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ืฉืื•ืœื™ ืื ื• ืžื•ืœื“ื™ื ืขื ื”ื ื˜ื™ื™ื” ืœื™ืฉื•ืŸ ื‘ืชื‘ื ื™ืช ื‘ื™ื•ืคืื–ื™ืช,
01:10
meaning one longer bout of sleep at night
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ื–ืืช ืื•ืžืจืช,ืฉื™ื ื” ืื—ืช ืžืžื•ืฉื›ืช ื‘ืœื™ืœื”
01:14
and then a short afternoon nap during the day,
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ื•ืœืื—ืจื™ื” ืฉื™ื ืช ืฆื”ืจื™ื™ื ืงืฆืจื” ื‘ืžื”ืœืš ื”ื™ื•ื,
01:17
very much like the siesta cultures around the world.
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ื‘ื“ื•ืžื” ืœืชืจื‘ื•ืช ืฉื™ื ืช ื”ืกื™ืืกื˜ื” ื‘ืจื—ื‘ื™ ื”ืขื•ืœื.
01:20
But is napping always a good thing?
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ืืš ื”ืื ื ืžื ื•ื ื”ื•ื ืชืžื™ื“ ื“ื‘ืจ ื˜ื•ื‘?
01:23
Well, not necessarily.
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ื•ื‘ื›ืŸ, ืœื ื‘ื”ื›ืจื—.
01:26
Although we and other scientists
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ืœืžืจื•ืช ืฉืื ื• ื•ืžื“ืขื ื™ื ืื—ืจื™ื
01:28
have discovered that naps can have benefits
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ื’ื™ืœื™ื ื• ืฉืœืชื ื•ืžื•ืช ื™ื›ื•ืœื•ืช ืœื”ื™ื•ืช ื™ืชืจื•ื ื•ืช
01:30
for both the brain and for the body,
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ื’ื ืœืžื•ื— ื•ื’ื ืœื’ื•ืฃ,
01:33
naps can be a double-edged sword.
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ืชื ื•ืžื•ืช ื™ื›ื•ืœื•ืช ืœื”ื™ื•ืช ื—ืจื‘ ืคื™ืคื™ื•ืช.
01:36
Long naps in the afternoon or in the early evening
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ืชื ื•ืžื•ืช ืืจื•ื›ื•ืช ื‘ืฉืขื•ืช ืื—ืจ ื”ืฆื”ืจื™ื™ื ืื• ื‘ืฉืขื•ืช ื”ืขืจื‘ ื”ืžื•ืงื“ืžื•ืช
01:39
can just take the edge off your sleepiness.
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ื™ื›ื•ืœื•ืช ืœื”ืคืจื™ืข ืœื˜ื™ื‘ ื”ื™ืฉื ื•ื ื™ื•ืช ืฉืœื›ื.
01:43
It's a little bit like snacking before your main meal.
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ื–ื” ื›ืžื• ืœื ืฉื ืฉ ืžืฉื”ื• ืœืคื ื™ ื”ืืจื•ื—ื” ื”ืžืจื›ื–ื™ืช ืฉืœ ื”ื™ื•ื.
01:46
So if you are struggling with sleep at night,
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ืื– ืื ืืชื ืžืชืงืฉื™ื ืœื”ื™ืจื“ื ื‘ืœื™ืœื”,
01:49
the best advice is not to nap during the day.
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ื”ืขืฆื” ื”ื˜ื•ื‘ื” ื‘ื™ื•ืชืจ ื”ื™ื ืœื ืœื ืžื ื ื‘ืžื”ืœืš ื”ื™ื•ื.
01:53
Instead, build up all of that healthy sleepiness
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ื‘ืžืงื•ื,ืขื“ื™ืฃ ืœืื’ื•ืจ ืืช ื›ืœ ื”ื™ืฉื ื•ื ื™ื•ืช ื”ื‘ืจื™ืื” ื”ื–ืืช
01:57
so that you give yourself the best chance of falling asleep easily
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ื›ื“ื™ ืฉืชื•ื›ืœื• ืœืชืช ืœืขืฆืžื›ื ืืช ื”ืกื™ื›ื•ื™ ื”ื˜ื•ื‘ ื‘ื™ื•ืชืจ ืœื”ื™ืจื“ื ื‘ืงืœื•ืช
02:02
and then staying asleep soundly across the night.
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ื•ืœืื—ืจ ื›ืš,ืœื”ื™ืฉืืจ ื™ืฉื ื™ื ืœืื•ืจืš ื›ืœ ื”ืœื™ืœื”.
02:05
But if you're not struggling with sleep
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ืืš ืื ืืชื ืœื ืžืชืžื•ื“ื“ื™ื ืขื ืงืฉื™ื™ ืฉื™ื ื”
02:07
and you can nap regularly during the day,
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ื•ืืชื ื™ื›ื•ืœื™ื ืœื ืžื ื ื‘ืžื”ืœืš ื”ื™ื•ื,
02:11
the naps of around 20 minutes taken early in the day
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ืชื ื•ืžื•ืช ืฉืœ ื› 20 ื“ืงื•ืช ื‘ืฉืขื•ืช ื”ืžื•ืงื“ืžื•ืช ืฉืœ ื”ื™ื•ื
02:15
can be just fine.
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ื™ื”ื™ื• ื˜ื•ื‘ื•ืช.
ืขืœ ืืชืจ ื–ื”

ืืชืจ ื–ื” ื™ืฆื™ื’ ื‘ืคื ื™ื›ื ืกืจื˜ื•ื ื™ YouTube ื”ืžื•ืขื™ืœื™ื ืœืœื™ืžื•ื“ ืื ื’ืœื™ืช. ืชื•ื›ืœื• ืœืจืื•ืช ืฉื™ืขื•ืจื™ ืื ื’ืœื™ืช ื”ืžื•ืขื‘ืจื™ื ืขืœ ื™ื“ื™ ืžื•ืจื™ื ืžื”ืฉื•ืจื” ื”ืจืืฉื•ื ื” ืžืจื—ื‘ื™ ื”ืขื•ืœื. ืœื—ืฅ ืคืขืžื™ื™ื ืขืœ ื”ื›ืชื•ื‘ื™ื•ืช ื‘ืื ื’ืœื™ืช ื”ืžื•ืฆื’ื•ืช ื‘ื›ืœ ื“ืฃ ื•ื™ื“ืื• ื›ื“ื™ ืœื”ืคืขื™ืœ ืืช ื”ืกืจื˜ื•ืŸ ืžืฉื. ื”ื›ืชื•ื‘ื™ื•ืช ื’ื•ืœืœื•ืช ื‘ืกื ื›ืจื•ืŸ ืขื ื”ืคืขืœืช ื”ื•ื•ื™ื“ืื•. ืื ื™ืฉ ืœืš ื”ืขืจื•ืช ืื• ื‘ืงืฉื•ืช, ืื ื ืฆื•ืจ ืื™ืชื ื• ืงืฉืจ ื‘ืืžืฆืขื•ืช ื˜ื•ืคืก ื™ืฆื™ืจืช ืงืฉืจ ื–ื”.

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