JUST DO IT!: custom printable workout exampley I like that there are stability ball exercises too (see the last 2 exercises on this example workout)! Workout Labs give full instructions on how to properly do the exercises.
Hurts like hell --> No Pain No Gain Fat Burning Ab Exercises. Burn fat and slim down while toning up your abs and strengthening your core. Repeat the circuit once or twice more. Click the image to see the moves in GIF form.