I’m in my late 50’s started running a year and a half ago. Started slow with waking, to walk run alternating, to all runs. Progressed in distance no more than 10% a week. Tried lots of things for knee pain. Better shoes, yoga, longer intervals between runs, a variety of warm ups and cool downs, running coach, strengthening exercises, running on grass, running on trails, and beaches. Still hurt. I have been using RecoverAthletics now for a month. Just finished 4.5 miles PB time. No pain. 😆Great value, short easy to follow videos. Video format talking only at the beginning then silent. You can watch the video without annoying repetitive narration. Videos continue until you are done. No need to start over. Helps in perfecting form.