Are humans meant to sleep at night?

Related questions

1. What is the longest time a person has slept?
2. Why do we sleep at night not day?
3. Is it bad to nap in the evening?
4. Is sleeping all day bad?
5. Why do I pee more when lying down?
6. Is it bad to sleep in the day and stay awake at night?
7. Can you die from lack of sleep?
8. What does it mean if u wake up at 3am?
9. How do I know if I'm getting enough sleep?
10. Is it better to stay up or sleep?

Tags

1. #middle
2. #references
3. #humans
4. #century
5. #changed
6. #language
7. #insomnia
8. #people
9. #blocks
10. #gradually
11. #night
12. #sleep
13. #segmented
14. #though
15. #slept
16. #which
17. #period
18. #ekirch
19. #lasting
20. #wakefulness
21. #during
22. #separated