Real Madrid will usher in their first Club World Cup against Riyadh Crescent at 3pm local time on Wednesday, but the high temperature has become a major hidden danger in this game.

Spanish triathlete Pablo Fuentes said in an interview with Cobe Radio: "When we do sports, the key is how to cool the body and how to drain the heat out of the body. People often talk about evaporation, that is, dissipating heat through sweat. But there is convection, the air that comes into contact with the skin. You will feel this at Miami Hard Rock Stadium. At 3:00 pm, the sun will cause you to absorb more heat than you emit, and if there is no conduction, I worry that the player's body will not be able to hold on. Some of the equipment we use can measure the internal temperature of the body, not just the temperature on the surface of the skin. I don't know if Atletico Madrid or Real Madrid have a corresponding solution, and these solutions may take a few weeks to adapt to the conditions in the game."

Real Madrid has only four days from arriving in Miami until the start of the game, which is obviously not enough. Pablo Fuentes said: "Adapting to jet lag and heat is a big challenge when teams need to cross six time zones from Madrid to Florida. It is said that it takes at least half a day to day to adjust the biological clock, and it also needs to adapt to the local environment. For top athletes, even with superior genes, the adaptation process still depends on the individual's body fat rate, training level and physical condition. Generally, they need at least 7 to 14 days to fully adapt to the new environment. There are many ways to try to lower body temperature, but in some cases, once the body reaches its limit, it is difficult to pass," he said. These methods to cool down. Even during training, I still feel this extreme state clearly. "

" During the game, players can use wet towels on the back of their necks or wrists, or make some preparations before the game starts, such as cooling their bodies quickly, which can help lower body temperature, and also use ice vests. FIFA uses a protocol called WBGT to measure the risks players may face in the game. However, based on current scientific knowledge, this protocol is outdated, and I think the risk of playing at 3:00 pm is much higher than what FIFA says. "