
The one-ar neutral grip dumbbell wrist curl is an exercise used to target the muscles of the forearms. Using a bench allows you to focus more on the movement by providing extra stability.
Having strong forearms, and training the forearms in multiple ways, will allow you to lift heavier weights in many exercises simply by strengthening your grip.
Performing unilateral movements can also help improve weaknesses, balance your strength and aesthetic physique, and work towards reducing injuries by addressing imbalances in the body.
Forearms can be a resistant muscle to grow and may require a higher training frequency to experience a noticeable difference in forearm strength and size.