Tag Archive for 'Toughest'

The Toughest 15 Minute Muscle Building Workout Ever

Serious about packing on quality muscle size with just four 15-minute workouts a week? The 6-12-25 Workout is designed for individuals seeking maximal muscular development by trashing the Type 11b, Type 11a and Type 1 muscle fibers in one giant 43-rep set. Warning: This is not for anyone with less than one year of consistent […]