The Move: Window Washer

Because you're simultaneously holding a plank position, this movement is doubly effective at tightening obliques and the midline.

Bonus zones: Chest, glutes, outer thighs and inner thighs

"Get into the tabletop position with your hands under your shoulders and your knees under your hips. Extend your legs behind you, keeping your back straight, your abs tight and your head neutral.

Place a hand towel underneath the toes of one foot (image a). Open one leg out to the side, dragging the towel in a large arc along the floor as wide as you can go (image b). Bring your leg back in and drag the towel back to meet your other foot to complete one rep. Do 5-10 reps, each leg."

All excerpts printed with permission from Body by Simone: The 8-Week Total Body Makeover Plan.
By Simone De La Rue, Celebrity Trainer
HarperWave, $25.99
Photo Credit: Zoe Buckman