1 It may cause rashes in hypersensitive people.  Iodine contrast can also cause an allergic reaction. Itâs an X-ray radiocontrast agent used for intravenous injections. Contrast dyes containing iodine have been responsible for severe allergy reactions (including deaths) in a limited number of hypersensitive people.
Do not resume a rigorous workout, because of the risk of further injury to the sore muscles. Massage is another way to reduce soreness. Massaging the muscles and promoting proper muscle relaxation will help keep muscle contractions down to a minimum.
What to do so You Feel Great AFTER Your Workout. Exercise should, technically, make you feel more energized, toned and fit -- not tired or sore. And while a little bit of fatigue and aches are normal, if you feel awful after you workout it's a surefire way to quickly give up your routine.