Cause of Side Stitches
What exactly causes them? When we inhale, our lungs fill with air, which press the diaphragm downward. When we exhale, the diaphragm moves up. If you have some trapped air below the diaphragm, if you've eaten right before running, or if you start running too vigorously, your diaphragm may cramp, causing pain under the rib cage on your right side. Contrary to popular belief, drinking before or during running does not cause side stiches.
Prevention of Side Stitches
If you tend to suffer from side stitches, try to avoid eating within one hour of running. Make sure that you always warm up before your runs.
Also, make sure you are breathing in and out through your mouth when you're running. Breathe deeply from your belly, not your chest. Deep belly breathing allows you to take in more air.
Running in extreme cold temperatures may induce side stitches, as it's less comfortable to take in deep lungs full of frigid air until you're thoroughly warmed up. If you're running in cold weather, try breathing through a scarf or neck warmer.
Treatment of Side Stitches
To get rid of a side stitch, try altering your breathing pattern. Take a deep breath in as quickly as you can, to force the diaphragm down. Hold your breath for a couple of seconds and then forcibly exhale through pursed lips.
If you get a cramp in the middle of a race, you might want to try changing your breathing/striding pattern. If you always exhale when your right foot strikes the ground, try exhaling with the left foot strike.
If all else fails, you may have to stop and walk briskly for a few seconds while concentrating on deep breathing. Continue running after the stitch goes away.
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