1- Stand up knees slightly bent but not locked holding dumbbells in your hands with neutral grip (palms facing each other).
2- Inhale and curl both dumbbells up toward your shoulder level, while keeping your palms facing each other.
3- Exhale in the easy part while lowering the dumbbells, and repeat until you finish your set's repetitions.
Tips and Advices:
1- To increase effort on brachioradialis muscle, raise the dumbbell across the front of your body rather than at your side.
2- Don't allow your elbows to come forward while doing the movement.
3- Avoid locking out the arms, as that will increase stress on your ligaments and tendons.
1- Dumbbell Alternate Hammer Curl
2- Seated Hammer Curl (performing the same exercise only while sitting on a bench).