Your Body Clock: How Aging Eyes Can Disrupt Your Sleep
Dr. Michael J. Breus
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Posted 05.09.2012
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Healthy Living
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Healthy Living News
Circadian rhythms -- our own internal biological "clock" -- govern our sleep-wake cycle and several other daily rhythms of the body. It's a complicated and finely-tuned system of hormonal and bio-chemical reactions that helps us live in rhythm with the 24-hour day.
