Execution:
1
Standing, hold the dumbbells with a neutral grip (palms facing each other).
2
Perform 7 partial reps in the bottom half.
3
Then 7 partial reps in the top half.
4
Finish with 7 full reps, keeping your upper arms aligned with your torso.
Tip: the hammer grip emphasizes the brachialis and brachioradialis (forearm).