Q: I’ve been getting amazing muscle-size gains with Progressive-Speed 4X [included in The Super-Size Crash Course]. Should I do more speed reps or more X-centric slow-mo reps to get the best mass results? I want to grow as fast as possible.

A: Don’t we all—but it’s hard to say which is best, as both styles trigger specific hypertrophy results. For the uninitiated… [Read more…]