Why do we sleep and what happens in the brain during sleep?

ConcealedDreamer · Jan 9, 2005

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)?

franznietzsche · Jan 10, 2005

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 that's right, but i remember reading it.

Gokul43201 · Jan 10, 2005

From which it is easy to prove that caffeine is a good source of oxygen !

franznietzsche · Jan 10, 2005

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.

Why do we sleep and what happens in the brain during sleep?

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