Why do we sleep at night not day?

Related questions

1. Is it better to stay up or sleep?
2. How can I sleep for 24 hours straight?
3. Do you sleep before your first night shift?
4. What is the longest time a person has slept?
5. What does it mean if you wake up at 2am?
6. Do naps help sleep debt?
7. Is Night mode good for eyes?
8. Can you live on 2 hours of sleep a night?
9. How is Dspd diagnosed?
10. Is 3rd shift bad for your health?

Tags

1. #harder
2. #makes
3. #asleep
4. #should
5. #computer
6. #television
7. #called
8. #screen
9. #sleep
10. #sleepy
11. #light
12. #turns
13. #melatonin
14. #night
15. #because
16. #brain
17. #chemical