by Anna January 07, 2004

by Anna March 13, 2004

by Anna August 28, 2003

by Anna May 13, 2005

by Anna November 10, 2003

Excessive daytime sleepiness(without a known cause).Depression, anxiety, stress, and boredom are commonly thought to cause excessive sleepiness.
Until the 1950s, most people thought of sleep as a passive, dormant part of our daily lives. We now know that our brains are very active during sleep. Moreover, sleep affects our daily functioning and our physical and mental health in many ways that we are just beginning to understand.
by Anna May 13, 2005
