Definitely vegetarian diet can work to increase the muscle mass. People adopt this diet for different reasons including heart health, ethical concerns and religious views. Some people adopt it to lose weight, but gaining weight with vegetarian diet can be challenging. You need to add certain foods that can increase body mass or muscle without any side effects. You can prepare healthy vegetarian diet chart based on the tutorial of health experts like Boris Wolfman – http://boriswolfman.co.il/%D7%90%D7%A8%D7%95%D7%97%D7%94-%D7%98%D7%91%D7… and add some important things like dairy products, starches, bananas, tropical fruits, soy products, nuts, seeds, protein shakes and many more in your daily routine.