The same black, why Kenyans are good at long-distance running, while Jamaicans are good at sprinting?

The world's most famous sprinter is estimated that we are all familiar with, that is, Bolt, he is Jamaican, and his native Jamaica is also more than sprinters, but a neighboring Kenyans are more than good at long-distance running, explosive power and endurance can be described as two extremes of the state. As for why the two places of black people will appear this situation, can only say that they live in a different situation conditions, just like the lion and the tiger are feline but in the power and stripe color is also completely different.

Explosive blacks and endurance blacks don't come from the same place,and very few blacks have both explosiveness and endurance. Many fans use the term "black and hard" to describe strong, explosive African athletes. These muscular black athletes come from Ghana, Cameroon, Nigeria, C?te d'Ivoire, and other West African countries, and are typically West African in physique. East Africans, on the other hand, have a slimmer physique, with thin, long legs, and they are like a matchstick compared to the thicker West Africans, who have very good endurance.

African origin theory holds that Africa is the birthplace of mankind, and that genetic diversity is at its richest in a species' place of origin. Because of the natural barrier of the East African Rift Valley, there is a huge physical difference between the people who live in the East African highlands and the West Africans along the Ivory Coast and Gold Coast.

This makes a huge difference in the system between West and East Africans. The West Africans had their own "stimulants" and the main ingredient in these stimulants was androgens, hormones that promote muscle and bone growth. This makes them more explosive on land and weaker in swimming. And East Africans rely on strong willpower more than physical fitness.