What you'll gain

• Builds forearm flexor thickness and visible lower-arm size.

• Strengthens grip for pulling, pressing, and carry exercises.

• Reinforces wrist control and tendon resilience under load.

Step-by-Step Instructions

1. 1

   Sit on a bench and rest your forearm flat along the top with your palm facing up and wrist hanging just past the edge.

2. 2

   Hold a dumbbell with a relaxed grip and let it roll down toward your fingertips at the bottom of the rep.

3. 3

   Close your fingers and curl the dumbbell back up by flexing only at the wrist, keeping your forearm pinned to the bench.

4. 4

   Squeeze hard at the top with your wrist fully flexed, holding the contraction for a brief count.

5. 5

   Lower the dumbbell slowly over 2 to 3 seconds until your wrist is fully extended at the bottom again.

6. 6

   Repeat for 12 to 20 reps, then switch arms and match the rep count on the other side.

Common Mistakes

• Lifting the forearm off the bench, which turns the rep into a small curl and removes tension from the forearm.

• Using too heavy a weight and barely moving through the wrist, cutting the working range in half.

• Skipping the let-the-bar-roll-into-the-fingers phase, which leaves out the deepest grip and forearm work.

• Speeding through the lowering phase instead of controlling it, where most of the forearm growth comes from.

About This Exercise

The dumbbell wrist curl is the most direct way to train the forearm flexors. Sitting with your forearm braced on a bench and palm facing up, you let the dumbbell roll toward your fingers and then curl it back up using only the wrist. It's a small, isolated movement that builds grip strength and the muscle on the underside of the forearm. For an app or coaching platform, wrist curls are bread-and-butter accessory inventory. They round out arm days, support grip work for pulling and lifting tracks, and are commonly programmed alongside curls and extensions in hypertrophy blocks. Ship this clip in your accessory and grip-training library so users always have the right teaching asset on hand.

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