Increase the resistance bodyweight training adds to your workout by stepping up onto a box or any other convenient, stable base. The Mason workout is a fully cardiovascular activity, performed with precision of movement and attention to technique so that it does not turn into an aerobic exercise, it will take each major muscle group through its full range of movement. If you're looking for increased body strength then this will definitely help you out.
Extra Credit: Use a box that's higher than your knees.