When it comes to sleep, the sweet spot is seven to nine hours. Sleeping for fewer than than six hours or more than 10 hours each night has been linked to chronic diseases, including heart disease, diabetes, and obesity, according to a study from the CDC. Another stress to your body is hitting the snooze button. Disrupting your sleep diminishes the benefits of rest, leaving you more tired than if you had gotten up the first time the alarm went off, explains Dr. Yizhak Kupfer, Assistant Director of Critical Care and Pulmonary Medicine at Maimonides Medical Center in Brooklyn, NY.

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