The Old Dominion University Human Performance Laboratory is doing an anonymous survey on how various factors such as sleep, psychological characteristics, etc. relate to “side stitching” in runners. If you’re at least 18 years of age and running 10+ miles/week, you’re eligible. The survey takes about 10-15 minutes to complete. https://odu.co1.qualtrics.com/jfe/form/SV_aidsa3WEbRBKOK9
Please consider taking the survey if you are interested.