> Currently I am also trying out a more hardcore exercise program because I never gained a lot of muscles in the past, even when I was doing MMA training 6 times a week.

To me, exercise is roughly divided between cardio and weight training. Cardio hardly builds any serious muscle mass (except probably your heart), but obviously weight training will. Can you tell us more about your new/current "more hardcore exercise program"? What is the mix of cardio vs weight training?