Belly Basics

Kneel with your forearms on the floor, elbows under your shoulders, hands clasped. Position your knees hip-width apart and behind your hips. Contract your abs [A]. If you can hold this position for one minute, progress by extending both legs behind you (one leg at a
time), your body forming a straight line from head to heels [B]. Hold for 10 seconds, working up to one minute.