after searching these sites, I am confident there is a market for people looking to decrease pain with running Reddit - common topic posts in a running group included: foot pain, shin splints, ankle pain/issues, heel pain, and injury prevention. There were also complaints that content creators are not relatable and that they promote how they "make time" for running and training without having a full time job. you tube - very high volume site for people looking to reduce pain with running. "stop knee pain now" 8.2 M views, "running warm up" 1.8 m views, "how to avoid runners knee" 2.5 m views, essential running tehcnique tips for proper form" 4.1 m views Amazon: found a few books about injury prevention and treatment. most had high reviews. there was a complaint that one book did not have any diagrams to illustrate injury top searches on google: how to fix runners knee, how to fix achilles tendinitis, running pain outside of knee