When considering "training frequency how often to hit each muscle," hitting each muscle group 2× per week is a solid strategy. Focus on 10-20 sets per muscle weekly for optimal growth. For instance, if you're doing squats and leg press, aim for 4 sets of each, twice a week. What’s your go-to muscle group to train? #calorieburning #tdee #metabolismboost #fatlossfacts #weightlossscience