Our natural sleep cycle is nothing like what we do now
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In today's world, balancing school, work, kids and more, most of us can only hope for the recommended eight hours of sleep. Examining the science behind our body's internal clock, Jessa Gamble reveals the surprising and substantial program of rest we should be observing.
Describe what happened when scientists took a horseshoe crab off the beach and placed it in a sloped cage across the continent.
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