Although researchers are debating the details, studies indicate that athletes who soak in cold water for short periods after exercise have less muscle soreness later on.
According to medical experts, the reason cold water helps with pain is that it causes your blood vessels to constrict. This reduces blood flow to the area — for example, an injury you’re applying ice to — which helps reduce swelling and inflammation.
If you’re using cold water to help with muscle recovery, you may want to combine it with strategies like stretching or active recovery.