Why are people happy with the sports achievements of their compatriots?

People all over the world have a competitive spirit. This formed the basis for sports competitions between countries. When a person worries about a compatriot athlete, he feels a kind of unity with the whole country.
So, during the Olympic Games, each country follows the development of events, cheers for its athletes. I always want to know if there is a limit to human capabilities, to set more and more records. Sport stimulates the right way of life – “sport is a healthy nation”, and it is also beautiful, interesting and useful.