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Something weird after workout: bulge seemed to recess
Working out has not been associated with increased abdominal pressure, for the most part. In fact, when performed correctly, it engages the abdomen and supports the core abdominal muscles.
Yes, it’s possible that the hernia bulging receded with exercise. You are effectively strengthening and supporting the muscles on the periphery of the hernia.
Exercises that have been shown to increase abdominal include squats and jumping.