How to do it

1. Sit on a bench with your feet flat and hold a dumbbell in each hand, palms facing down.
2. Rest your forearms on your thighs, allowing your wrists to hang over the edge.
3. Slowly curl your wrists upward, lifting the dumbbells as high as possible.
4. Pause briefly at the top, then lower the dumbbells back to the starting position.
5. Repeat for the desired number of repetitions, maintaining control throughout.