Start: Kneel on a mat. Extend right leg out to right side, touching toes to floor.
Move: Keep back flat, and slowly raise right leg, pausing when it reaches butt level, then lower right leg to the left―directly behind stationary leg―and tap toes to the floor. (You should feel like you’re drawing an upside-down V with your foot.) Reverse the movement until right leg is back in start position.
Repeat: 8 to 10 repetitions, then switch positions to work left leg.