Power Plank
step 1) Prop yourself on your forearms
Lie facedown on the floor with you upper body propped on your forearms so your elbows are positioned directly positioned beneath your shoulders.
step 2)Lift one leg
Holding that position, lift your right leg straight up as far as comfortably possible without arching your back, and then return to the starting position. Repeat six times, and then switch to the opposite leg.
You’ll feel it
In your abs, back, glutes and chest.
The Body-Love benefit
Every woman should be able to hold her own weight, and this move demands that you do. It tightens and tones your "corset" muscles – the deepest abdominal muscles that hold you upright and naturally suck in your stomach – so you'll immediately improve your posture and feel more sure of yourself.
Kacy’s coaching tips
It's easy to "cheat" on this move by letting your belly sag toward the floor of arching your butt up toward the sky. To keep yourself honest, try placing a broomstick or a dowel on your back. If it rests on the back of your head, between your shoulders, and on your butt, you're arrow straight and doing it right.