There's a right—and wrong—way to follow one.

This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. You’ve heard the saying “calories in versus calories out” when it comes to weight loss. This is referring to a calorie deficit. But ...

Many people want to build muscle and lose weight for an improved physique, but the goals can be a bit contradicting. Typically, you need to be in a calorie deficit to lose weight and a calorie surplus ...