Extended or shortened sleep duration linked to weight gain

Body Mass Index (BMI) varies as a function of habitual sleep duration, according to a new study.

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<p><a href="http://www.physorg.com/news163906041.html">Extended or shortened sleep duration linked to weight gain</a></p> <p>Body Mass Index (BMI) varies as a function of habitual sleep duration, according to a new study.</p>