After Chris Hemsworth went through his growth stage for Thor, he was too big. He needed to get a little leaner. One of the ways to accomplish this without losing muscle mass is to do a program like P90x. It provides cardio which will give you a leaner look than traditional heavy weight lifting. You won’t get huge, but done properly you can tighten and tone the muscle mass you have. Look at this transformation to see the effect a P90x workout can have on your body!