The one-arm hammer curl is a great exercise for the biceps and the forearms.
- Set up by grasping a dumbbell and standing straight up with the dumbbell by your side.
- You should be using a neutral grip, meaning the palm of your hand is facing your body. You can use your other arm to stabilize the body.
- Take up the "slack" by bending your arm slightly. This is the starting position.
- Slowly curl the dumbbell up as far as possible.
- Squeeze the bicep at the top of the movement, and then slowly lower the dumbbell back to the starting position.
- Repeat this movement with the other arm.