>>12569569Cold-faring races like Europeans and Asians have to prepare for winter so during prehistoric times they were selected do things like that. Even though they don't need gas at the time, they assume they will in the future. It is basically storing up gas for the winter. There is no winter in this case, but they are still motivated to do it that way.
Tropical races like Africans and Latinos on the other hand are adapted to an environment that does not change much so they don't do a lot of long-term planning. The things you did yesterday? You will do the same thing today and tomorrow and the rest of the year.