A

>Attach a handle to an adjustable cable pulley machine positioned at its lowest setting and load 3 to 5 pounds on the stack.

> Lie on your left side facing the machine so your chest is even with the handle. Get into side plank position with your feet stacked and your left forearm on the floor, elbow aligned under shoulder and palm facing up. Hold the handle with right hand, arm extended at chest height in front of you.

B

>Keep your hips up as you lift your right arm toward the ceiling and raise your right leg. Hold for 2 counts, then slowly return to starting position (keeping your torso still) and repeat.

>Trainer’s tip To help keep your hips raised (and the workload on your core) push into the floor with your forearm.

A

> Attach a handle to a cable pulley at hip height. Load 8 to 10 pounds on the stack and stand a few feet in front of it with right side closest to handle, feet shoulder-width apart.

B

> Rotate torso to center as you straighten right arm and pull left arm to your side. Return to start and repeat.

> Trainer’s tip Keep the resistance low—if you don’t feel this exercise in your abs, you’re using too much weight.

A

> Get in plank position with your wrists aligned under your shoulders and your abs pulled in tight.

> Raise your left arm toward the ceiling as you rotate your body to the left until your hips and shoulders are squared; turn your head so you’re looking at your left hand. Hold this position for 2 counts.

B

> Slowly rotate your body back to center as you lift your hips toward the ceiling and reach left hand toward right foot. Hold for 2 counts, return to start, and repeat.

>Trainer’s tip Don’t let your back arch; keeping your abs pulled in tight will make it easier to do this move and decrease the stress on your lower back.