Medicine Ball Leg Crunch
10 reps
Pin a medicine ball between your knees and crunch your shoulders up.
Tap to try it
What happens when you tap record
It all runs on your device
The camera and the rep-counting AI work right here in your browser. Nothing is streamed or uploaded while you train.
Every rep earns +1 XP
Watch your XP climb in the top bar as you go — no account needed to start earning.
Your clip stays on this device
The recording is kept locally in your browser. It only moves to the cloud once you create an account.
It carries over when you sign up
Make a free account and your reps and clips come with you — nothing you did here is lost.
ABS
Medicine Ball Leg Crunch
Holding a medicine ball between your knees keeps your legs locked at 90 degrees while you crunch, adding constant tension to the abs. Squeezing the ball also recruits your inner thighs, making a simple crunch more demanding.
How to do it
- 1
Lie on your back and place a medicine ball between your knees.
- 2
Lift your feet so your hips and knees both sit at a 90-degree angle, gripping the ball with your knees.
- 3
Curl your shoulder blades off the floor by contracting your abs.
- 4
Hold the top for a beat, keeping the tension in your core.
- 5
Lower your shoulders back down slowly without releasing the squeeze on the ball.