I don't lift weights heavier than 7 pounds because when I do, my shoulders, back and chest bulk up in a way that I don’t like. So, I prefer to stick to my 3- or 5-pound dumbbells.

New research shows 20-rep and 10-rep resistance training both build muscle and strength equally - but high reps may boost endurance too. Discover how to revolutionize your training with science-backed ...

Former six-time Mr. Olympia champion Dorian Yates explained how to master the three phases of a rep for better peak contractions.