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.
When you work out, it causes little tears in your muscle fibers. This is called microtrauma and itâs why you feel sore after a workout. On the upside, your body heals these little tears, making the fibers tougher than they originally were. Thatâs how you become stronger and fitter.