Why do we sleep?

  • #1
Why do we sleep? Is it because our brain needs time to move and solve problems, and recharge energy to our organs? And is sleep sub consciencous (sp) or unconscience (sp)?
 

Answers and Replies

  • #2
1,414
5
ConcealedDreamer said:
Why do we sleep? Is it because our brain needs time to move and solve problems, and recharge energy to our organs? And is sleep sub consciencous (sp) or unconscience (sp)?

I read some where that fatigue is caused by the bodies inability to acquire enough oxygen to keep everything running. This is what causes yawning, an attempt to get more oxygen. During sleep the bodies oxygen use goes down, while intake reamins about the same, essentially catching up.

Not sure if thats right, but i remember reading it.
 
  • #3
Gokul43201
Staff Emeritus
Science Advisor
Gold Member
7,051
18
From which it is easy to prove that caffeine is a good source of oxygen !
 
  • #4
1,414
5
Gokul43201 said:
From which it is easy to prove that caffeine is a good source of oxygen !

Hardy har har. But a caffeine high does not feel the same as being well rested.
 

Related Threads on Why do we sleep?

  • Last Post
Replies
20
Views
4K
  • Last Post
3
Replies
56
Views
8K
  • Last Post
Replies
2
Views
6K
  • Last Post
Replies
19
Views
2K
  • Last Post
Replies
8
Views
1K
  • Last Post
Replies
7
Views
2K
Replies
43
Views
11K
  • Poll
  • Last Post
2
Replies
38
Views
4K
  • Poll
  • Last Post
2
Replies
27
Views
4K
  • Last Post
Replies
2
Views
1K
Top