Former six-time Mr. Olympia winner Dorian Yates detailed why executing slow negative reps or the concentric is a key aspect to training.

One set to failure—is that enough to build muscle? I tested Mike Mentzer’s Heavy Duty method for four weeks. Here’s what ...

For most people, 5 to 20 sets a week for a muscle group isn't nearly enough to get you the ripped results you're looking for, ...