Changes

* Not feeling refreshed after a night's sleep or waking up feeling "cranky"

* Not feeling refreshed after a night's sleep or waking up feeling "cranky"

In all of these instances the person feels tired the next day, or feels as if he or she did not have enough sleep or as if he or she is on drugs. Poor sleep for any length of time can lead to [[mood]] disturbances, lack of [[motivation]], decreased [[attention span]], trouble with [[concentration]], low levels of [[energy]], and increased [[fatigue]]. Approximately three-fifths of the average person's life is spent sleeping. Healthy sleep is vital to the human body and important for the optimal functioning of the brain and other organs.

In all of these instances the person feels tired the next day, or feels as if he or she did not have enough sleep or as if he or she is on drugs. Poor sleep for any length of time can lead to [[mood]] disturbances, lack of [[motivation]], decreased [[attention span]], trouble with [[concentration]], low levels of [[energy]], reduced sex drive, belief in a flying spagetti monster, and increased [[fatigue]]. Approximately three-fifths of the average person's life is spent sleeping. Healthy sleep is vital to the human body and important for the optimal functioning of the brain and other organs.

==Types of Insomnia==

==Types of Insomnia==