How to do it
Keep your knees stacked together at the same angle throughout.
- 1
Lie on your back with your knees bent and feet flat on a stability ball.
- 2
Extend your arms out to the sides for balance.
- 3
Roll the ball to one side by rotating your hips, while keeping your shoulders flat on the ground.
- 4
Use your abs to pull the ball back to the center.
- 5
Repeat the twist to the opposite side.
- 6
Continue alternating sides for the desired number of repetitions.
Expert tip
Engage your core and move in a controlled manner to maintain balance on the stability ball.
Common mistakes
- ✕Lifting the shoulders off the floor
- ✕Losing contact between feet and the ball
- ✕Arching the lower back during the twist