Why extremely sparsely populated Tibet, so called the 3rd pole due to its harsh environment can produce Olympic gold medalists?

[beijingwalker]

Tibet has a very small population, just 3 million, smaller in population than a Beijing's district, but it produces Olympic gold medalist and many ethnic Tibetan athletes compete for China in various Chinese National teams

 

[beijingwalker]

One of the Highest stadiums in the world, Lhasa city, Tibet. altitude 3646.45 meters above the sea level, capacity over 20,000 seats.

Stadium is inside the Lhasa sports center, together with modern gymnasiums, swimming center and other sports facilities

 

[beijingwalker]

Tibet village premier football league