Hang from the pullup rig (horizontal bar) with your hands outside shoulder width and the feet touching the floor behind you. Ideally mimic your clean width grip.

In this image we’ve used a stack of plates to enable Antoinette to place her feet down. You want to hang your whole bodyweight, but keep the toes in contact with the floor to allow you to hang and relax. Moving the legs further back behind the torso will open the shoulders more than a vertical hanging position.

More in this series:
Weightlifting & Flexibility
Increase Ankle Flexibility
The Russian Baby Maker
Deep Spiderman Lunge
Lying Hamstring Stretch
Create a Shelf for the Bar
Wrist Flexor Stretch
Burgener Rack Stretch
Thoracic Spine Foam Rolling
Doorjamb Shoulder Stretch
Underarm Stretch