I went running once and tore something in my knee to where I couldn’t really walk right (but did stupidly anyways) and couldn’t climb stairs anymore. I pushed through and it did get better, and then I had to slowly start running again. After a year or 2 I stopped having any major issue with it

I didn’t stretch almost every day while it was injured though, with whatever stretches didn’t hurt. Not a medical professional, but pretty sure that’s just always a good thing