Quote:
Originally Posted by bossku69
There is also a condition (can't remember the name off hand) where you can not get into REM sleep long enough and keep going between stage 3/4 to 2. Without being in stage 3 or 4 for long periods of time, you body will be exhausted... and therefore your mind as well.
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That condition is precisely sleep apnea, because you stop breathing your sleep will become fragmented and if you can't make the complete sleep cycle your brain will always be tired ... imagine that year after year, it's almost as if you coudn't sleep for 10 years or more!