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The famous football player Cristiano Ronaldo is an extremely self-disciplined person, which makes him still maintain an excellent competitive state in the 37-year-old "high collar". In addition to scientific aerobic exercise and a healthy diet, one of Ronaldo's "secret weapons" is cold therapy at a temperature of -160°C.
Yes, you read that right, -160°C!
This therapy is "cryotherapy" (Cryotherapy). The most commonly used refrigerants in cryotherapy are liquid nitrogen and dry ice (solid carbon dioxide), but liquid oxygen or Freon are also used.
"Cryotherapy" is a "black technology" that has only appeared in recent years. When it first appeared, even some well-informed senior reporters were dumbfounded. The famous basketball player LeBron James (LeBron James) also used this method Body repair.
But "cryotherapy" is not popular. The construction cost of the equipment is one aspect, and the human body's tolerance is another issue that needs to be considered.
An alternative to "cryotherapy" is ice therapy. Simply put, soak in ice water. This method is simple, low cost and effective. Ronaldo and James also often use ice therapy for post-sports rehabilitation.
When the body is exposed to cold, the blood vessels in the body dilate. Then, as the cold continues, blood vessels begin to constrict. This prompts blood to flow back to the internal organs of the body. This process helps remove toxins and improves blood circulation.
As the ice bath time increases, the body releases cytokines.
Cytokines are extremely important for cell-to-cell communication, helping to produce cells, repair cell tissue, and control the body's immunity.