Sleep Drive and Your Body Clock

Have you ever noticed that you feel more alert at certain times of day, and feel more tired at other times?  Those patterns are a result of two body systems: sleep/wake homeostasis and your circadian rhythm, or internal body clock. These systems determine your sleep drive, or your body’s need for sleep, at any given time.

Click here to view.

sleepfoundation.org   |   5 min read