Cable wrist curl

Attach a straight bar to a low pulley cable machine. Stand facing the machine with your feet shoulder-width apart. Grasp the bar with an underhand grip, palms facing up, and your hands shoulder-width apart. Rest your forearms on a bench or pad, with your wrists hanging off the edge. Keeping your forearms stationary, exhale and curl your wrists upward as far as possible. Pause for a moment at the top, then inhale and slowly lower the bar back to the starting position. Repeat for the desired number of repetitions.