Owning a six-pack at least once in a lifetime is a goal for many fitness enthusiasts, as it represents the epitome of a toned and athletic body. However, training alone isn't enough. For the rectus ...

This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA.We'll start at the very beginning: Body mass index (BMI) is a measure of someone's weight compared to their height whereas body fat ...