Running

Also @ghostface, as Salad mentioned stretching isn’t necessarily for everyone - in fact there’s some data to suggest it increases injury risk, perhaps through additional mobility where some stiffness would keep you in check. It’s not black and white, basically.

^ so much this.

(I didnt watch thd video) For Warm Up it should be more about movement to progressively warm up muscles & lungs etc at first.

The traditional "few mins static stretching" of cold muscles then launching straight into a run isn't going to offer much imo. Others may disagree still.