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Old 08-20-2012, 09:38 AM
Mark in Idaho Mark in Idaho is offline
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Mark in Idaho Mark in Idaho is offline
Legendary
 
Join Date: Feb 2009
Location: Somewhere near here
Posts: 11,418
15 yr Member
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This usually results from the quality of sleep the previous night. For me, I sometimes will have periods of sleep apnea and wake up all messed up. It can also be caused by too much activity the previous day that leaves the brain so fatigued that it struggles to sleep properly, such as cycling through REM sleep.
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Mark in Idaho

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