Why do the sides of your stomach hurt when you run?

Pain on both sides of the running stomach may be caused by muscle spasms, gastrointestinal spasms, acute enteritis and so on.
1. Muscle spasm: If you don’t warm up before running and relax your muscles properly, it is easy to cause muscle spasms on both sides of your stomach when running, resulting in pain. At this time, you can adjust your breathing and rest for a few moments to gradually ease the pain, so don’t worry too much.
2. Gastrointestinal tract spasm: If you run after eating a full meal, it is easy to cause gastrointestinal tract spasm, which will also cause pain on both sides of the stomach. At this time, you should stop running, adjust your breathing, rest and massage your abdomen to relieve the pain.
3. Acute enteritis: Acute enteritis may not have any symptoms in the early stage, and the symptoms may be aggravated after eating. Acute enteritis is mainly caused by bacteria and viruses and other infections, in addition to the pain on both sides of the stomach there will be diarrhea, fever, nausea, vomiting and so on. Therefore, if you suffer from acute enteritis and go for a run after eating, you may also experience pain on both sides of your stomach while running.
If the pain on both sides of the stomach can not be relieved after resting, you should consult a doctor in time to avoid delaying your condition.