The libraryStrength

Loaded / progressive stretching

Full-range lifting moved joint flexibility about as far as stretching did, and the heavier the set, the further it moved.

Who it's forAny lifter who books a separate mobility session to fix his tightness.

Emergency: call 911.

I am not a doctor. This is not medical advice. This is self-education. Talk to a physician who has your history before you change anything.