Ever wondered why we sleep? Dr. Mansfield explains why we need to rejuvenate and refresh our organs to be able to work and function at a higher capacity.

**This series is for information and entertainment purposes only.  It is not intended to be a substitute for professional medical advice, diagnosis, or treatment.  Do not delay or disregard professional medical advice based on the information provided.  If you are having a medical emergency, dial 911.

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