or try Swiss ball roll outs, where you keep holding the plank position, but slowly roll the ball a few inches away from you. The key to this move is to keep your body rock-solid in the plank.

Begin in an elbow plank with your forearms resting on the top of a ball. Keeping your core strong and your body still, use your arms to roll the ball in a small clockwise circle. This completes ...

Roll the ball forward to extend your legs and form a forearm plank position on the ball, toes tucked. Your shoulders should stack directly over your elbows, with your chest lifted off the ball and ...

Try it once you have mastered the basic plank. Come to a facedown position on the mat and roll your medicine ball by your feet. Extend into plank position with your legs extended long and your ...

If the rolling portion is too difficult, simply hold a plank atop the ball, she adds. As you perform this move (and the progressions listed below), it’s easy to sag in your upper back and ...

Get in a low-plank position with your feet about shoulder ... Maintaining this position, roll the ball back and forth to each other. Your hips and obliques will do overtime to keep you from ...

Keeping arms straight, pull medicine ball forward to chest-level, pause, and then return to overhead position. Complete 12 reps. Start in a high plank position with shoulders over wrists ...

Below you’ll find three variations of ab workouts: traditional ab exercises performed lying on your back, plank ab exercises, and exercises performed with a fitness ball. Perform 10 repetitions ...

Resist the pull of your partner. A and B are starting in a tall plank position, facing each other, with one medicine ball. A rolls the ball from their left to right hand, then across to partner B ...

You will need a large stability ball and an exercise mat. Make it harder: Roll onto your right forearm and stack feet to perform a side plank. Repeat on other side. Lie facedown on a stability ...

Lower the medicine ball to the floor and press into it with both hands as you jump (or step) legs back into a high plank. From here, quickly jump feet towards the ball, into a squat position.