Performing the: A Step-by-Step Tutorial Dumbbell Over Bench Wrist Curl
Rest your right forearm on your right thigh, allowing the back of your wrist to hang over the edge of your knee.
Slowly lower the dumbbell as far as possible, bending at the wrist.
Once you've lowered the dumbbell, curl your wrist upward, lifting the dumbbell as high as you can.
Lower the dumbbell back to the starting position, repeating the movement for your desired number of repetitions, then switch hands and repeat the exercise.