This workout app is designed to increase your muscle mass as much as possible in 4 weeks. The program works each muscle group hard few times per week using mostly heavy compound exercises.

The Muscle Building Workout Routine is a great weight training program that I recommend most often to people looking to build any amount of muscle mass as fast as possible. This workout routine is designed to work for both men and women, young and old, people looking to build a significant amount of muscle and get big or build a small amount of muscle and just get toned.
Basically, if you’re past the beginner’s stage and your primary goal is building muscle or improving the way your body looks in virtually any capacity, this program is for you.