Do you need it when you practice your back? Pull? Actions, such as rowing, pulling down (rope, pulley), etc. At this time, be careful to pull with your elbow instead of your wrist. When pulling down, you should not pay too much attention to the force of your hand, which will shift the force point to your wrist. The wrist will be pulled down all the time, and you can't exercise your back at all, which is easy to sprain.