This is a timed, static exercise that develops the isometric strength of the abs. Features
1. This is an isometric exercise that targets the anterior (front) chain of the body, with major emphasis on the abdomen.
2. It will help you protect your lower back as you absorb the shock from different types of terrain while skiing.
3. All you need is a floor or mat.
4. This is a novice level exercise.
Good form but how long can you really hold it?
strong1235 1 year ago