Why do athletes have to go into the freezer?
Nowadays, the freezer is not only loved by football players, but also by many NBA stars or track and field athletes. Quick-freezing box has a great effect on athletes' physical recovery, and it is gradually popularized all over the world. In fact, the chemical in the freezer is liquid nitrogen. Liquid nitrogen plays a great role in life and has a bright future.
Liquid nitrogen can be used to freeze and transport food, and it can also be used to help stop bleeding and preserve living tissues in places that can be quickly frozen during surgery. Liquid nitrogen refrigerator can contract blood vessels, reduce the body's metabolism and have the effect of relieving pain. Therefore, fans will often see many football superstars upload photos of themselves entering the freezer on social platforms, and their facial expressions look very enjoyable.
However, what puzzles fans is that the temperature in the freezer is MINUS 100 degrees. Won't athletes get frostbite at low temperature? First of all, the place where the freezer is located is a relatively closed space. The released liquid nitrogen does not directly contact the athlete's body, but enters the closed space through the steam released by liquid nitrogen, which has soothing and therapeutic effects on the athlete's muscles.
In addition, after the competition, the athletes' brain nerves are in a state of excitement, blood flows rapidly, and muscles become tight and stiff. It can be said that athletes can tolerate the low temperature when they enter the freezer, and usually stay in it for about 3 minutes. If athletes stay in the freezer for a long time, it will do some harm to their health.