One of Bodybuilding.com's most popular training programs is Kris Gethin's 12-Week Muscle-Building Trainer. Gethin is a world-renowned fitness icon who prides himself on his never-ending quest for knowledge, superior supplement line, and unrelenting ambition to demolish his body in the gym in pursuit of myth-busting, jaw-dropping transformation results. As a Certified Personal Trainer, Strength and Conditioning Coach and Sports Nutritionist, [...]