abdominal pain when walking outdoors, man with stomach ache on nature background

abdomen abdominal ache appendicitis belly bellyache bloated bloating body bowel cholecystitis chronic cystitis diarrhea digestion digestive disease gastric gastritis gastrointestinal griping gut healthy heartburn hurt ileus illness indigestion infection inflammation inflammatory injury male man nausea outdoors outside pain painful pancreatic pancreatitis people poisoning sickness sore soreness spasm stomach stomachache ulcer