Circadian rhythm is the body's "biological clock," or 24-hour cycle. A body's circadian rhythms can be affected by light or darkness, which can make the body think it is time to sleep or wake up.
The 24-hour circadian rhythm controls functions such as:
- Sleeping and waking.
- Body temperature.
- The balance of body fluids.
- The way other body systems function.
Author:Jeannette Curtis
Caroline Rea, RN, BS, MS
Caroline Rea, RN, BS, MS
Medical Review:Patrice Burgess, MD - Family Medicine
Adam Husney, MD - Family Medicine
Kathleen Romito, MD - Family Medicine
Adam Husney, MD - Family Medicine
Kathleen Romito, MD - Family Medicine
Last Updated: 05/25/2007
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