Finally, fill out your shirt in all of the right places with Sultan’s boxing training & Muscle and Weight Gain program. You’ll learn how to increase muscle mass, as well as increase your overall size and strength. You’ll receive live tutorials on the proper forms to use on gym equipment to target your muscles in the most effective way possible. Depending on your starting point and goal, this program lasts from 4 to 12 months. (Gym access required.)