Step by step instructions
Begin in modified side plank position with left arm extended under shoulder, palm pressed on floor, right hand behind head, and left knee bent on the floor, making sure weight is on the side of the knee, not on top of it. Bend right knee and lift leg out to the side of the hip, curling right heel in toward body.
Extend right leg out to side, reaching right arm straight out toward foot. Bend right knee behind body and return right hand behind head. Perform the prescribed number of reps on each side.