Wanna start a fight? Walk into a room full of strength coaches, personal trainers, and exercise physiologists and ask, "How many reps should I do to build muscle?" Follow it up with, "What's the ideal ...

When you lift a weight, how many times should you lift it? Supposedly, there's a correct "rep range" to use to build strength, and a different rep range to build muscle size, or endurance, or to "tone ...