How to do it
Initiate each rep by tilting your pelvis posteriorly before the knees travel.
- 1
Position yourself on the ab coaster machine according to its design.
- 2
Place your knees on the pad and grip the handles.
- 3
Use your abs to bring your knees up towards your chest.
- 4
Slowly lower your knees back to the starting position.
- 5
Repeat for the desired number of repetitions.
Expert tip
Avoid using momentum to lift your knees; focus on using your abdominal muscles to perform the movement.
Common mistakes
- ✕Dragging the knees upward at an angle
- ✕Rushing the lowering phase without control
- ✕Arching the lower back during the lift