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Articles on Sleep cycle

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The circadian rhythm is present in every single cell of your body, guided by the central clock that resides in the brain. Creations/Shutterstock.com

Simple blood test could read people’s internal clock

Everybody has a personal internal clock in their brain that dictates when we feel like eating, waking and sleeping. But what happens when our life doesn't match our body clock? And how do we read it?

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