Dumbbell One-Arm Concentration Curl (w/ Stability Ball)

How to do the Dumbbell One-Arm Concentration Curl (w/ Stability Ball)

1. 1Sit on a stability ball with your feet flat on the floor.
2. 2Hold a dumbbell in one hand and rest your elbow on the inside of your thigh.
3. 3Curl the dumbbell towards your shoulder, keeping your upper arm stationary.
4. 4Squeeze your bicep at the top of the movement.
5. 5Slowly lower the dumbbell back to the starting position.

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