Stitch – another hypothesis

This is quite a specific one. There seem to be a number of different versions of “side stitch”, and from personal experience, they seem to correlate to how much and how hard you are breathing. Previously we have posted about the possibility of psoas being implicated in stitch as it is a considerable hip flexor and gets stretched when running at higher speeds and greater exertion. A few weeks ago I decided that I would start running with a Heart Rate Monitor (HRM) again. You might be able to tell where this is going. Strapped on the HR monitor around … Continue reading