- #1
rogerk8
- 288
- 1
Hi!
I wonder why we have to sleep.
Physical tiredness can be measured by the amount of milk acid in our muscles.
But is there an measureable analogy in our brain when it comes to mental tiredness?
It seems simple enough that if you use the brain too much it will have to rest.
But why?
I mean, you eat mainly for energy (and nutricians) and when food energy has depleated it is actually possible to take from the hull, so to speak.
So energy is available around the clock and even around a couple of weeks (if you're lucky).
So energy is not the reason.
Our brain gets tired and needs sleep for another reason.
This is however only one part of the question.
The other is, what happens during sleep?
One indication is the obvious recovery from hungovers.
You can be really hung over and nothing really changes from the point you wake up to the point you go to bed again.
The only time it changes is when you have slept for a night. Then you are feeling remakably better.
This should mean that what happens during sleep is at least maintenance.
Like the amateur I am I think that energy is focused away from taking care of the inputs from all our sensors (eyes, coordination etc) and is focused toward maintenance instead.
And if you think about it, the amount of signal processing is probably higher than most of us think.
One thing is the forward and feedback system from our lems, one other is the amazing "Terapixel" resolution of our eyesight.
But why is sleep making us so fit for a new day?
Roger
I wonder why we have to sleep.
Physical tiredness can be measured by the amount of milk acid in our muscles.
But is there an measureable analogy in our brain when it comes to mental tiredness?
It seems simple enough that if you use the brain too much it will have to rest.
But why?
I mean, you eat mainly for energy (and nutricians) and when food energy has depleated it is actually possible to take from the hull, so to speak.
So energy is available around the clock and even around a couple of weeks (if you're lucky).
So energy is not the reason.
Our brain gets tired and needs sleep for another reason.
This is however only one part of the question.
The other is, what happens during sleep?
One indication is the obvious recovery from hungovers.
You can be really hung over and nothing really changes from the point you wake up to the point you go to bed again.
The only time it changes is when you have slept for a night. Then you are feeling remakably better.
This should mean that what happens during sleep is at least maintenance.
Like the amateur I am I think that energy is focused away from taking care of the inputs from all our sensors (eyes, coordination etc) and is focused toward maintenance instead.
And if you think about it, the amount of signal processing is probably higher than most of us think.
One thing is the forward and feedback system from our lems, one other is the amazing "Terapixel" resolution of our eyesight.
But why is sleep making us so fit for a new day?
Roger
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