1. He said that before the industrial era, nobody slept 8 hours in one block. People slept in two parts: they went to bed after sunset, woke up around midnight, stayed awake for 1–2 hours, then went back to sleep. This “split sleep” was normal for thousands of years. But when factories appeared in the 19th century, society forced everyone into one long sleep window — and the body never fully adapted. He said the modern schedule confuses the brain: it doesn’t understand when it should rest and wh
0:05
TikTokkitija.ozo
1. He said that before the industrial era, nobody slept 8 hours in one block. People slept in two parts: they went to bed after sunset, woke up around midnight, stayed awake for 1–2
kitija.ozo(@kitija.ozo). original sound - kitija.ozo. 1. He said that before the industrial era, nobody slept 8 hours in one block. People slept in two parts: they went to bed after sunset, woke up around midnight, stayed awake for 1–2 hours, then went back to sleep. This “split sleep” was normal for thousands of years. But when factories ...
已浏览 790万 次1 周前
短视频
The process of splitting wood with a circular wood splitting stand
0:06
已浏览 463.7万 次
The process of splitting wood with a circular wood splitting stand
Craftsman Vision
What is Loan Amortization?
1:31
已浏览 257.2万 次
What is Loan Amortization?
Tata Capital
Excel Tutorial
The Ultimate Excel Tutorial - Beginner to Advanced - 5 Hours!
5:43:05
The Ultimate Excel Tutorial - Beginner to Advanced - 5 Hours!
YouTubeSimon Sez IT
已浏览 188.8万 次2021年12月6日
Master Excel Basics in NO TIME
46:38
Master Excel Basics in NO TIME
YouTubeTeacher's Tech
已浏览 33.4万 次2023年11月13日
Excel Tutorial Beginner to Advanced - 12-Hour Excel Course
11:55:34
Excel Tutorial Beginner to Advanced - 12-Hour Excel Course
YouTubeSimon Sez IT
已浏览 117.4万 次2023年1月25日
热门视频
Cómo abrirse de piernas fácilmente
0:18
Cómo abrirse de piernas fácilmente
TikTokjuanfecastrob
已浏览 980万 次2023年6月6日
Stretching middle/side splits in leggings with step platform
0:08
Stretching middle/side splits in leggings with step platform
YouTubeIgnite Yoga
已浏览 90.1万 次3 周前
My Tongue Piercing Journey – A Baby Step!
0:06
My Tongue Piercing Journey – A Baby Step!
TikTokglimzygirl
已浏览 42.2万 次1 周前
Excel Formulas
Excel Formulas and Functions | Full Course
52:40
Excel Formulas and Functions | Full Course
YouTubeKevin Stratvert
已浏览 230.2万 次2022年5月13日
How to use Formulas and Functions in Microsoft Excel
26:26
How to use Formulas and Functions in Microsoft Excel
YouTubeTeacher's Tech
已浏览 45.9万 次2021年4月19日
Top Excel Formulas and Functions
2:31:06
Top Excel Formulas and Functions
YouTubeSimon Sez IT
已浏览 14.6万 次2024年1月17日
Cómo abrirse de piernas fácilmente
0:18
Cómo abrirse de piernas fácilmente
已浏览 980万 次2023年6月6日
TikTokjuanfecastrob
Stretching middle/side splits in leggings with step platform
0:08
Stretching middle/side splits in leggings with step platform
已浏览 90.1万 次3 周前
YouTubeIgnite Yoga
My Tongue Piercing Journey – A Baby Step!
0:06
My Tongue Piercing Journey – A Baby Step!
已浏览 42.2万 次1 周前
TikTokglimzygirl
30-Day Splits Challenge Progress Update - Left Leg Pain Relief
0:16
30-Day Splits Challenge Progress Update - Left Leg Pain Relief
已浏览 660万 次2023年1月1日
TikTok30_days_progress
Split Tongue Beauty: Slowly But Surely Turning Into My True Self
0:05
Split Tongue Beauty: Slowly But Surely Turning Into My True Self
已浏览 77.5万 次2024年3月21日
TikToknikkibitez
The 5 Moves That Open Your Middle Splits FAST 🔥 #flexibility #stretching #shorts #yogapractice
0:15
The 5 Moves That Open Your Middle Splits FAST 🔥 #flexibility #stretchin…
已浏览 28.8万 次2 周前
YouTubeFlex with Olha
split challenge pt2
1:17
split challenge pt2
已浏览 110.4万 次2022年9月26日
YouTubeILayla°
0:50
Homemade Split Pea Soup Recipe with Ham | Easy and Delicious
已浏览 62.5万 次2023年4月2日
TikTokdownshiftology
1:06
Billionaire David Geffen Files for Divorce After 2 Years
已浏览 13.3万 次1 周前
TikTokpinknews
0:11
time to cut off my hair #brycewsly #damagedhair #splitends #hairtok …
已浏览 24.6万 次3 周前
TikTokbrycesyora
2:33
Dr Nabiha Nikkah And Slip of tongue that's amazig now #Drnabiha #bre…
已浏览 21.3万 次4 周前
TikToksaqibahmadraja
1:43
Healthy steak bagel bites Each one 57 calories 6.3g protein 2.17 g fat…
已浏览 6万 次1 周前
TikTokcookingforgains
0:32
Split #yeat #edit #yeatedit #luhskeletn #fyp | yeat
已浏览 12.7万 次1 周前
TikTokluhskeletn
0:14
I wish hyein and haerin nothing but the best but knowing the other 3 w…
已浏览 19万 次4 周前
TikTokloonanextdoor
1:58
#duće #november #swimminginnovember #dalmatia …
已浏览 9.2万 次1 周前
TikTokanita_split
2:08
Kandi it's finally falling for a divorce from Todd. I guess she has seen t…
已浏览 9.6万 次2 周前
TikTokmzuniquecutz
2:45
Joe: Trump’s attacks on Marjorie Taylor Greene show “a fracturing …
已浏览 4.4万 次3 周前
YouTubeMS NOW
0:13
The gay split, the 67 split, the let me syd split. I can do all kind of splits…
已浏览 8.4万 次2 周前
TikTokchoxpox
0:31
My Current 5 Day Workout Split for Muscle Growth 🦾
已浏览 1.9万 次1 周前
YouTubeIsiah Simon
观看更多视频
静态缩略图占位符