crunch (on stability ball)

A waist exercise targeting the abs, performed with stability ball.

crunch (on stability ball) demonstration
crunch (on stability ball) β€” demonstration

Body part

Waist

Equipment

Stability Ball

Target muscles

Abs

Secondary muscles

Hip Flexors

How to do crunch (on stability ball)

  1. Sit on the stability ball with your feet flat on the ground and your knees bent at a 90-degree angle.

  2. Lie back on the ball until your lower back is supported and your upper body is parallel to the floor.

  3. Place your hands behind your head or across your chest.

  4. Engage your abs and lift your upper body towards your knees, curling your torso forward.

  5. Pause for a moment at the top of the movement, then slowly lower your upper body back down to the starting position.

  6. Repeat for the desired number of repetitions.

Muscles worked

Primary (target)

Abs

Secondary

Hip Flexors

Related exercises

All waist exercises β†’

Track crunch (on stability ball) in NutriMind

Log your sets and the app does the rest β€” automatic PR detection, progression charts for every lift, and progressive overload that adjusts your next workout. Paired with AI nutrition coaching so your training and your plate pull in the same direction.

Planning your next heavy session? Estimate your max with the One Rep Max Calculator and build up to it with the Warm-up Calculator. More free tools β†’