Sudden side stitch when jogging - what causes it?

The problem is usually shallow breathing combined with running too fast. When you notice the side stitch coming on, just slow down your pace and focus on breathing deeper and more rhythmically - ideally breathing in for every three steps and out for every three steps. That often relieves the stitch within a few minutes. Some people also swear by consciously breathing into your belly while jogging instead of just into your chest.

Generally, side stitches also happen a lot if you start jogging too soon after eating or haven't warmed up properly. Your body just needs a few minutes to get into a rhythm. I notice it myself - when I run right after breakfast in the morning, I end up annoyed with myself. With a bit of patience and a slow start, the problem usually isn't that dramatic.

Another tip: make sure your core muscles aren't too weak. If you lack core stability, the muscles around your organs tighten more easily and cause the stitch. Regular training helps the most in the long run.

A lot of people don't realize that side stitches can also be linked to what you eat - if you've eaten something right before jogging or haven't drunk enough, that makes the whole thing way worse. Your body tension plays a role too: if you're running all tense instead of loose, your muscles tighten up and the stitch gets worse. Try not eating anything heavy for at least 1-2 hours before your workout, and when you're running, focus on relaxing your shoulders and breathing more calmly.

For me it was a long time the combination of going too fast and having a tense diaphragm - as soon as I jog slower and actively exhale (not just breathe, but really exhale), the side stitch goes away. Plus: if I ate something heavy beforehand or didn't drink enough water, it's guaranteed to get worse. These days I make sure to have at least an hour between eating and training, and that's made a huge difference.

Do you drink anything while you're jogging, or just after? I wouldn't be too hard on yourself about eating before exercise - for me it was more that I was running too tensely and then my diaphragm couldn't work properly. But honestly, what really helped: start slower, breathe in deliberately through your nose and out through your mouth, and if you get that sharp pain, just take a break instead of pushing through. Over time you train it out of your system, and then it doesn't happen nearly as often.

Side stitch is often just a cramp in your diaphragm, which you can get under control with deliberate breathing - here's what I do: when it hits, breathe in consciously through your nose and exhale forcefully through your mouth, ideally synced with your steps. This sounds like details from other answers, but the key point is: a lot of people jog way too tense because they start too fast or just don't run relaxed. I wouldn't go overboard with eating right before (a banana an hour before is fine), but if you're already getting side stitch while jogging, then keep it chill and really focus on conscious breathing - in my experience, that works more reliably than adjusting your pace. 💨