Sleep is one of the great mysteries of life. Like gravity or the quantum field, we still don’t understand exactly why we sleep—although we are learning more about it every day.
We do know, however, that good sleep is one of the cornerstones of health.
Six to eight hours per night seems to be the optimal amount of sleep for most adults, and too much or too little can have adverse effects on your health.

An employee climbs a ladder to check a huge clock, on March 26, 2015 in Cergy. France will change to daylight saving time on March 29, with the clocks moving forwards one hour. Photo credit should read Thomas Samson/AFP/Getty Images
Dr. Joseph Mercola is the founder of Mercola.com. An osteopathic physician, best-selling author, and recipient of multiple awards in the field of natural health, his primary vision is to change the modern health paradigm by providing people with a valuable resource to help them take control of their health.
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