According to the National Public Radio (NPR) website, Google searches in the United States have seen a significant increase in inquiries about why swimmers wear winter jackets before competing in the Olympics.
The website indicated that the question has become widely circulated among social media users in the United States.
According to the website, wearing vests, especially before swimming competitions, helps maintain a stable body temperature after warming up.
Swimming World magazine also mentioned that wearing vests by swimmers helps keep their muscles relaxed, flexible and ready to move forcefully.
The magazine explained that if the muscles are cold, they become stiff and less responsive.
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