<P> There are other theories regarding side stitches than simple stretching of the visceral ligaments due to repeated vertical translation and jolting . Such theories include diaphragmatic ischemia, imbalances of the thoracic spine, irritation of the parietal peritoneum and strain on visceral ligaments by a fluid - engorged gut . </P> <P> A further theory points to shallow breathing as a possible cause for a stitch and one possible preventative measure involves adjusting at what point in a runner's stride they inhale, or reducing the frequency of inhales (with an increase in inspiratory capacity). </P> <P> The reasons for the variety of theories include, in particular, the prevalence of ETAP during swimming . </P> <P> Most of the time, side stitches occur on the right side of the body . This may be because the largest organ in the abdominal cavity, the liver, is on that side . Certain athletes also report a pain in the tip of their shoulder blade . This is believed to be because this is a referred site of pain for the diaphragm via the phrenic nerve . When the side stitch is on the right side, published advice is to try to exhale when the left foot lands . </P>

Why does my liver hurt when i exercise