Add Yahoo as a preferred source to see more of our stories on Google. Samantha Lee/Business Insider Lifting heavy weights close to failure is crucial for muscle development, a personal trainer ...

BETHESDA, Md. (June 14, 2005) – Catch an athlete with clear potential early in his career, study his physiology over an incredibly eventful seven years including victory in the Tour de France, and you ...

Skeletal muscle is the type of muscle that controls movement. Problems with these muscles can be minor, life-threatening, or ongoing problems that make it hard to perform basic daily activities.

To build muscle, you need to lift heavy weights and work hard, said Harry Smith, a personal trainer. It's important to recover well after workouts and fuel your body properly, with plenty of protein.