Cutting calories too drastically can make your metabolism slow down, causing your weight-loss efforts to backfire and negatively impacting your health. Here’s why.

Looking to tone up your physique for next year? Here’s the healthy, expert-approved way to do it—once and for all.

Airlines rarely announce how much water they carry; excess potable water adds weight, but little water is no good either.

Confused about protein recommendations? We asked protein experts on what exactly is the answer. Plus, everything else you need to know about the macronutrient.