After an athlete is injured, the medical staff often take out a bottle of spray, or cover the injury with a bag, in fact, this is the use of physical cooling for emergency treatment. Why do you need ice packs after an injury Isn’t it more comfortable and faster to get well with a hot soothing compress? This is the misunderstanding of our daily life thinking. Hot compresses can certainly relieve tendons and blood, but just injured, the internal capillary rupture of the tissue, this time if the hot compresses, blood circulation accelerated, the white blood cells gathered more and more, more blood, redness, swelling, pain will be more obvious. Therefore, what the human body needs most at this time is local cooling, inhibiting local blood circulation, slowing down the spread of inflammation, so that the bleeding stops as soon as possible. How to properly ice 1, temperature Ice just out of the refrigerator and refrigerator freezer temperature is basically the same, about minus 5 ° to minus 15 °. Such a low temperature will be frostbite tissue, only add the right amount of water to become a mixture of ice and water in order to make the temperature moderate. 2, package Ice is mostly angular, and uneven contact surface of the limb, next to the place is too cold, not next to the place and not ice to, so add water to make the whole ice bag into a soft water capsule, in order to softly and evenly in contact with the need to ice the place. 3, time Should not be non-stop ice or as much ice as possible? Some winter swimmers ashore on the body is red, the reason is that when the temperature drops, the capillaries reactive contraction, the skin’s blood circulation rate drops, but after a period of time, the organization will reflexively expand blood vessels, increase the blood flow of local tissues in order to avoid necrosis of local tissues, in the naked eye, it seems to be that the skin is frozen red. It is easy to see that if the time is too long, the ice packs instead promote circulation again, which is certainly something we don’t want to happen in the early stages of an injury. The ideal time to apply ice is about 15-20 minutes at a time, with 1-2 hours between each application. Once the pain is not too pronounced, icing every 2-3 hours is sufficient. If the injury is very minor, you can apply ice for less time and less often. How to do when injured outdoors If you are injured outdoors, there is no refrigerator and ice at hand, you can buy a bottle of ice-cold drinks, poured in a plastic bag as an ice pack; there is no suitable plastic bag can be poured directly on the towel handkerchiefs and so on the top, moistened with cold directly after the ice pack. Ice packs are so effective, then is there no need for hot packs? Acute injuries in the first two or three days is to ice, ice inhibits bleeding and inflammation, but already have bleeding and inflammation should rely on hot compresses, to promote blood and lymphatic circulation of the tissues, the inflammatory substances and bruises away, in order to get well faster. So ice and heat are not contradictory at all, as long as the interval of 3-5 hours, ice and heat treatment at the same time in a day, are right, not contradictory, not conflict! To summarize, if you don’t apply ice in time, the inflammation can’t be controlled and the injury won’t get better. Ice and heat packs complement each other, reasonable cooperation with the use of, in order to achieve the best results.