Excessive joint sprain, tendon, muscle and ligament injury.
After a shoulder injury, you must wait until it is healed before doing something involving the shoulder joint.
Work. Otherwise it will become an old wound, which will be very troublesome)
Two: the bird is a single-joint action, and it should feel better than doing bench press. Maybe you are moving.
I didn't master it well. I will tell you a website with pictures and videos. ...
/f？ kz=32286 19 12