dumbbell finger curls

How to do it
- 1Sit on a bench or chair with your feet flat on the ground and your back straight.
- 2Hold a dumbbell in one hand with an underhand grip, resting your forearm on your thigh, palm facing up.
- 3Allow the dumbbell to roll down to your fingertips, then curl it back up by flexing your fingers.
- 4Repeat for the desired number of repetitions, then switch to the other hand.
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