The only reason I ever experienced knee pain before my 70’s was wearing the wrong kind of shoes.

Runners experience knee pain? That’s the only part of me that doesn’t hurt

Too much and too fast. Lack of strength training. Lack of good sleep.

I ran D1 track and cross country and always tell new runners thay the unfortunate thing about running is that something will always hurt you. You have to learn to identify the difference between “hurt” and “injured” because if you stop every time something hurts you’ll never run 😂 Knee pain can be caused by 1,000 different things my answer would be different depending on the fitness level of the runner in question

If you mean what is the most common cause Of injuring your knee From Running. It’s from heal breaking. If you mean in general I think it’s from running with unresolved injuries not caused from running

Lack of proper strength training Overtraining

1. The training volume is too high for their current fitness level 2. The training intensity is too high for their current fitness level

1. Too much, too fast, too soon. 2. Mobility and strength deficit.