4B-Swiss Ball Lenghten On Elbow
4B Lying with your elbows on a ball, extend the arms forward while holding the plank position. Perform 10 reps. Keep your back straight and the abs contracted.
* to increase the intensity, push your arms further in front of you and firmly plant your feet.
* alternative if too difficult, do it with your knees on the ground.
* to increase the intensity, push your arms further in front of you and firmly plant your feet.
* alternative if too difficult, do it with your knees on the ground.