02/07/2012 04:05 pm ET Updated May 14, 2012

Fatigue: Explanations For Why You May Be Constantly Tired (VIDEO)

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We all have days when we can barely drag ourselves out of bed, but what should you do if you are constantly battling fatigue? In the above video, Dr. Tasneem Bhatia -- contributing editor at Prevention Magazine -- visits "The Today Show" to discuss some medical explanations for why you may be tired all the time.