Do You Make This Muscle Building Mistake?

A reader, KB from England, wrote in to ask a question about building muscle.

"I read in a fitness magazine that if you continue with a workout for longer than six weeks you'll actually become less fit and less muscular," wrote KB.

"Do I need to shock my muscles by changing exercises every six weeks? How long should the 4-day routine in the Maximum Muscle Plan be followed before changing the exercises so my muscles don't adapt to them and become less effective?"

It's a good question. After all, the "change exercises every 4-6 weeks" mantra usually gets repeated in most of the popular fitness magazines on a regular basis as if it's some kind of undisputed fact. But it isn't. In fact, too much variety can lead to a frustrating lack of progress.