Note: In this exercise, the point is to avoid concentric muscle work, which means actively bending your wrist. Therefore, the other hand is used to bend the wrist and bring the dumbbell to the upper position.
Sit beside a table, holding a dumbbell in one hand. Support your forearm on the table so that your wrist is over the edge and your palm is facing upwards. The wrist is bent upwards.
Slowly lower the dumbbell down. Then, with the assistance of your other hand, return to the starting position by lifting the dumbbell and bending the wrist upwards.
