EzineArticles.com: Your circadian rhythm is the 24-hour clock that drives wakefulness and sleep.

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How Your Biological Clock Affects Your Health and Your Weight

EzineArticles.com: The surprising secret to increase your metabolism is quality sleep. We all have a 24-hour biological rhythm of sleeping and waking known as our circadian rhythm. If you are sleep-deprived then your circadian rhythm is put out of balance

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One Little Known Secret to Increase Your Metabolism