Their tough training conditions have cultivated their strong will, which is why African athletes are good at long-distance running.
Running is a national sport in Africa, just like table tennis in China and national football in Brazil.
Because their trunks are short and their limbs are long, the lower limbs of black people, especially their calves, are longer than others, which is conducive to rapid and flexible movement, and the slender calves are also convenient for obtaining greater lateral speed. The achilles tendon of black people is very strong, and the strength of plantar flexor muscles is different from others, which is why they can live a greater reaction when kicking the ground at the start and gain an advantage at the start.