barbell wrist curl

Sit on a bench with your feet flat on the ground and your forearms resting on your thighs, holding a barbell with an underhand grip. Allow the barbell to roll down to your fingertips, keeping your wrists straight. Slowly curl the barbell up towards your forearms by flexing your wrists. Pause for a moment at the top, then slowly lower the barbell back down to the starting position. Repeat for the desired number of repetitions.