Bicycles is the intermediate core exercise. Start on your back with one foot on the ground and your other foot extended out above the ground. With both hands behind the back of your head—just above the neck—bring your extended knee in and the opposite elbow towards it. Simultaneously extend your opposite foot out and bring your opposite elbow down towards the ground. Be sure to keeping your chin up, eyes looking up towards the ceiling and your head off the ground.
Core | Intermediate