Study shows greater muscle area in men leads increased risk of heart disease; it's different for muscle density. Body composition -- often expressed as the amount of fat in relation to muscle -- is ...

New research is revealing that obstructive sleep apnea may have deeper physiological consequences than previously understood.

Obstructive sleep apnea not only causes disordered breathing and daytime fatigue, but weak muscles and increased fracture ...

Muscle and fat weigh the same in pounds. The key difference is not in weight, but in density. Muscle is denser than fat, taking up less space in a body. A very muscular person will therefore look ...

IF YOU'RE HOPING to gain muscle, eating so-called bulking foods are essential. “Bulking increases size and muscle density,” says Julia Long, MPPD, RD, performance dietitian with RC13 Sports. 'Bulking' ...

Resist the urge to quit resistance training.

Add Yahoo as a preferred source to see more of our stories on Google. Most lifters spend hours in the gym yet leave with modest results. Research consistently shows hypertrophy is driven more by total ...

A large portion of people who work out regularly aspire to build definition, strength, and a physique that appears athletic, but does not make them look like a bodybuilder. Active adults who are ...