The Half Ab Wheel Rollout from the knees begins by firmly gripping the Ab Wheel then squeezing your butt and abs before pushing the Ab Wheel forward. Strongly squeeze the butt, abs and shoulder blades tightly together and back. Do not let the lower back arch as you drive forward. Only go as far as you’re able to keep the spine neutral and shoulders tightly engaged. Once you reach the end of your range of motion and control, squeeze tighter through the abs and shoulders to pull it back to the starting position.
Do not let the lower back arch during the movement.