Target area(s): chest
How to perform the stability ball push up:
This first version is easier than the second.
Begin with your knees/lower quads on the ball. Your hand should be supporting your upper body and be about shoulder-width apart.
A more difficult variation is t0 perform the move above, but with your ankles/shins on the stability ball.
Complete 3 sets of 10-15 reps, resting for 60 seconds in between each set.