 [ Symptoms ] why does the penis retract while running my penis retracts significantly while running or performing strenuous cardio my penis does return to its original state after either pulling it back out with much pain or allowing it to relax and return to its original state 4 5 minutes [ Disease ] are you running or exercising naked there are penile conditions that can cause this reaction but you would need to see a urologist to be properly examined penile retraction can occur because of a ample fat pad in this area or weaker connective tissue exactly why your penis is deciding to hide during exercise is really a mystery until you see a urologist since this is causing your pain when you pull your penis back out from it is temporary hidden position i strongly advise you to get it properly examined