Don't Chicken-Wing Your Press
There are several possible reasons for the dreaded "chicken-wing" with your press shape. Lack of skill, fatigue, mobility, etc. Maybe you are a superstar and it's some combination of everything.
In terms of mobility, this is a quick way (Full Video) to gain some traction and free-up pressing-performance!
A quick summary? Sure! I love cliff-notes...
Short-term: You perform better!
Long-term: Your shoulders stay healthy!
Get after it!