Many possibilities: Without an actual examination, I cannot give specific medical advice on your particular health, Surface of abdomen: constrictive clothes can bind/rub/irritate skin and muscle Muscle: the abdominal muscles move, but if poor tone, running irritates them (they feel like a sore muscle). can be hernias/faults in the muscle or fat bouncing and pulling on abdominal wall Less likely:: gut, stomach etc...
Answered 9/29/2016
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4 doctors weighed in across 2 answers
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