
Drinking alcohol to fall asleep interferes with sleep homeostasis, the body’s sleep-regulating mechanism, researchers have found. Sleep homeostasis balances the body’s need for sleep in relation to how long a person has been awake. If an individual loses sleep, the body produces adenosine, a naturally occurring sleep-regulating substance that increases a person’s need for sleep. When a person goes to sleep early, sleep homeostasis is shifted and he or she may wake up in the middle of the night or early morning.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/Tm1Fe1YPMnU/141210162326.htm