The advantage is it is free. Also the protiens and fats and carbohydrates in it work really well, I have bought this stuff once to see why big schools are using it, and recovery is a lot better than coming home and eating barbeque chicken and then some oatmeal with banana in it. In my experience it helped me recover from my workouts overnight… big difference for me. So that's why I think its an advantage because of the great recovery.
