*Ice packs are most commonly used for acute injuries. (Acute injuries are the ones that have occurred in the last 48hrs-1week timeframe) . Initial 48hrs of ice application helps in minimizing swelling and alleviating pain by constricting the surrounding blood vessels and decreasing the blood circulation to the affected area.
*In case of chronic injuries, commonly seen in athletes ice is the best choice of application post a workout as it discourages the onset of swelling and pain.
*In normal individuals involved in a rigorous workout, it is advisable to have a cold shower post a workout as it can prevent soreness from setting in as a result of injury or overuse.