Hold a dumbbell in each hand with palms facing up and rest your forearms on your thighs, letting your wrists hang over your knees.
Similar to the palms-up wrist curls, but this time hold the dumbbells with your palms facing down. Allow the weights to roll to the tips of your fingers, then curl them back up by flexing your wrists.
Stand with your feet shoulder-width apart, holding a barbell with an overhand grip (palms facing down) and your hands shoulder-width apart.
Hold a dumbbell in each hand with an overhand grip arms fully extended by your sides. Keeping your elbows close to your body, curl the weights upward towards your shoulders, then lower them back down slowly.
Hold a dumbbell in each hand with a neutral grip arms fully extended by your sides. Curl the weights upward towards your shoulders while keeping your palms facing in, then lower them back down under control.
Hold two weight plates together with their flat sides facing out and grip them between your thumb and fingers. Squeeze the plates together tightly and hold for as long as possible before releasing.