Changes

* Difficulty remaining asleep or waking up many times during the night (not necessarily having any difficulty falling asleep)

* Difficulty remaining asleep or waking up many times during the night (not necessarily having any difficulty falling asleep)

* Waking up too early in the morning

* Waking up too early in the morning

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

* Not feeling refreshed after a night's sleep  

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 experiences daytime fatigue and feels as if he or she did not have enough sleep. 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, immune system, and other organs.

==Types of Insomnia==

==Types of Insomnia==