 [ 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 ] there is no correlation between contrast allergies and shellfish allergies this is a myth that has persisted in the medical field since the 70 is but is untrue shellfish allergies are caused by a muscle protien in the shellfish tropomyosin you can not be allergic to iodine it is in your body in your thyroid gland breast tissue and many other places without iodine in your body you can not live