Challenge Your Upper and Lower Abs with 1 Move
Under the Knee Medicine Ball Crunch
This is a challenging way to change up your crunches and to target your entire torso. The heavier the ball the harder the exercise. Be sure to keep your abdominals contracted to support your lower back, if you do feel any stress or strain in your back, stop right away. You can always use a light weight in place of the medicine ball or if you are new to exercise start with no weight at all. Keep in mind the lower you go the more challenging the exercise! Aim for 2 to 3 sets of 10 reps in your next workout.
Thanks for the demo Tom!