I am having a running issue and can't not pin point what is going on and have not had a injury. I need a physician of some sort to analyze my running and let me know what is going on and why I favor my left leg and my right gives out. Is it muscle? Form? Hips?It's frustrating because at one time I was a decent paced runner. Can anyone refer me to a professional that can help me???? This has gone on for too long.