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Stability Ball Concentration Curl (Dumbbell)
Also known as: Stability Ball Concentration Curl (Dumbbell).
A single-arm concentration curl while seated on a stability ball.
How to perform this exercise
- Sit securely on a correctly sized stability ball with feet wide and flat. Brace the back of one upper arm against the inner thigh and hold one dumbbell underhand with the elbow softly extended; the free hand rests on the other thigh.
- Curl the dumbbell without lifting the upper arm from the thigh or rolling the ball, then lower slowly and switch sides after the set.



