Why is the runway of this World Championships in Berlin blue?

It is said that running on this "cool" blue track will feel particularly fast. Will "alternative" colors give athletes a psychological run-up effect? At least German psychologist bream, who specializes in the relationship between color and sports performance, believes in the "blue miracle". He said that blue reminds people of the endless sea and the sky, which is very attractive, and people will be more willing to run on the blue runway. And the red plastic runway will cause psychological pressure of rejection. Isn't the traffic sign "Stop" red? There is even news that the blue runway may become a legal "stimulant" for German athletes this time, because some surveys show that blue is the favorite color of most Germans. In any case, this special runway is expensive-about 400,000 euros. Huang Xiaoxiao, a China hurdler who ran on the blue runway for the first time, said with emotion, "This is the only stadium I have ever seen with a blue runway. Running on the blue runway is like being in the sea and feeling vast. " Becquerel, a famous Ethiopian long-distance runner, said: "Running on the blue track is very comfortable, which can make people calm down and concentrate on the race."

It can be seen that the blue runway gives athletes an extraordinary feeling.