Russian Twist (on stability ball arms straight)
Expert Advice
Keep your movements controlled and deliberate to maximize core engagement and prevent momentum from taking over.
How-to-do Steps
- Sit on a stability ball and walk your feet forward, rolling the ball to your upper back and shoulders.
- Extend your arms straight in front of you, clasping your hands together.
- Engage your core and lift your chest slightly to maintain a straight back.
- Rotate your torso to one side, then to the other, keeping your arms extended.
- Continue alternating sides for the desired number of repetitions.
Details
Primary

Abs80%
Secondary

Quads20%
Equipment
Stability ball

Exercise Type
Strength