Routines to increase muscle mass can be performed by both men and women; Lab Nutrition specialists , a leading company in nutritional supplements for health and sport, give you to know the exercises that you must include in your training routine to increase muscle mass and look more toned body. Squatting Squatting with bars is a key exercise for the development of legs, including quadriceps, buttocks and calves. Working them correctly will also strengthen the muscles of the abdomen, shoulders and back.