The '69 GTO Judge is a very special muscle car. Here are some cool facts about a "performance" car intended to be a "low-cost" Pontiac.

Muscle mass percentage chart Muscle mass is difficult to measure on its own because it depends on many factors, including height, diet, ethnicity, and fitness level.

Increasing the body's percentage of muscle mass can have various benefits. Here, learn to estimate this figure, as well as the percentage of fat.