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Disorders  Always Sleepy and Tired    I am sleepy most of the
day. I get 7-8 hours of sleep a day. However, I can fall asleep
at any time. As soon as I sit down and relax, I am asleep within
5 minutes. It doesn`t matter where I am. I only feel rested for
the first couple of hours of the day. Could this be some sort of
sleep disorder?   It is obvious that this sleepiness is a
problem for you and you are right to seek advice. Excessive
daytime sleepiness (EDS) has many causes and there are a number
of possible causes to consider. These can be broadly categorized
into primary sleep disorders and problems that can affect your
sleep that are not sleep disorders per se.  The most common
cause of EDS is that individuals have insufficient total sleep
time or a lack of adequate sleep. Not sleeping enough hours (a
condition called sleep restriction) is can lead to excessive
sleepiness during the