exercise ball on the wall calf raise (tennis ball between knees)

Stand with your back against a wall and place an exercise ball between your lower back and the wall.

Position your feet shoulder-width apart and slightly in front of you.

Hold a dumbbell in each hand, with your arms extended by your sides.

Place a tennis ball between your knees.

Raise your heels off the ground, lifting your body up onto your toes.

Pause for a moment at the top, then slowly lower your heels back down to the starting position.

Repeat for the desired number of repetitions.