I often hear runners complain of sore feet, bad backs, sore knees, tight hamstrings, and tight hips. If people would learn how to POSE run then they could reduce injury. Over the years, I have seen runners with joint pain, back problems, muscle pulls, tendinitis, strains, and sprains. Runners need to increase their range of motion. Through stretching and yoga they can get better in terms of strength and flexibility.