Q: I’ve been reading that testosterone is the key muscle-building hormone. Does the hormone boost come from intensity, more reps or what?

A: Arthur Jones, creator of Nautilus machines and the overseer of the Colorado Experiment that saw Casey Viator gain 60 pounds of muscle in only 4 weeks, always said that training legs hard can have a big “indirect muscle-building effect.”

What that means is that you could train your legs hard and see size gains in other muscles, such as [Read more…]