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Re: It's not just not sleeping.

Posted by tomwith2cats on May 20, 2005 at 07:58:47:

In Reply to: Re: It's not just not sleeping. posted by scottydog on May 19, 2005 at 13:26:12:

The point is, Why is it that sometimes sleep
is refreshing and you wake up ready to go,
and other times you wake up and feel
exhausted? The reason why the sleep experts
focus on breathing problems -- sleep apnea --
is that obstructions to breathing can cause
many small awakenings during the night. The
brain causes you to wake up if it feels it isn't
getting oxygen. The way they can tell there
are all these awakenings, even one's you
aren't aware of, is by hooking you up to
machines that monitor your brain waves and
your oxygen levels etc. There is a certain
brain wave pattern that distinguishes being
awake versus being asleep. You can go into
that brain state momentarily in the night
but not fully wake up. If this happens lots
of times during the night, it disrupts
your sleep, and impairs the ability of sleep
to do its job. Breating problems may not be
the only possible reason why someone might
have many awakenings. Nor is this the only
possible cause of exhaustion. It's just that,
if you're in bed a long time and seem to be
sleeping for a long enough time but you still
feel exhausted, what then is the reason?

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