PLANK WITH ARM CIRCLES

Start in push-up position, body in a straight line supported on hands and toes, a towel under each palm. Hold your body still as you slowly slide your left hand in small clockwise circles against the floor. Repeat with your right hand. Do six circles with each hand, switching directions halfway through.

MAKE IT EASIER

Do the move in modified plank position, knees on floor, body in a straight line from knees to head.

MAKE IT HARDER

From modified plank with knees on floor, bend elbows to lower into the bottom of a push-up. Hold, then slide your right arm out to the side and back in. Press back up to start; repeat, sliding your left arm out. That’s one rep. Do six.