Some tension in the legs, like a tightly wound spring, is beneficial for running performance.

“stretching has not been a huge part of like my my running all you actually want some tension in your legs think about it like your muscles being Springs like if there's some tension a a tightly wound spring is going to respond to the ground quicker right compared to like a slinky that's super slow so you actually want a certain amount of tension healthy tension you want full range of motion but so we're doing a lots of like Mobility work to get that full range but keeping some tension in the leg so not a lot of static stff”