meunouk,

where did you read that whites have more "slow twitch" muscle fibers than blacks? i have been through just about all of the science courses and a&p courses in college and i have never heard of any degree of variance in muscle fibers between blacks and whites. if that is true though, it is an evolutionary trait that blacks must have developed because of the fact that they were prodominantly located in the southern hemsiphere of the world, hence the balck skin from the sun, and the extra, and or, different muscle fibers they supposedly have due to hunting and running after their dinner. this is not a joke either, it is a sociological fact. PLUS, most southern hemisphere nations produce great fighters because they are poorer countries. look into it if you dont believe me. thats why the "white man" rules the earth. the white man controls the money, and the poor sothern hemisphere countries always produce better fighters because they have to work harder to gain a better way of life. in the US, and most other g7 countries, we have it made!! aside from the terrorist threat, we all live a pretty good life.