The guy with really long Achilles tendons, high calves, short muscle bellies, and a higher percentage of slow twitch muscle fibers will have a much more difficult time making his calves into cows than the guy with shorter Achilles tendons, low calves, long muscle bellies, and a higher percentage of fast twitch muscle fibers.

Does this mean genes play a role in our political views, say whether we’re a leaver or a remainer?There have definitely been studies that have looked at different brain profiles associated with ideology. People who are very conservative seem to have a much larger volume and a much more sensitive amygdala – the area of the brain that is involved in perceptions of fear. People who are more liberal seem to have a greater weighting on the region of the brain that is engaged in future planning and more collaborative partnerships. They don’t seem sensitive to immediate threats; instead, they are looking to the future. What we see in propaganda through the centuries is that if you heighten someone’s fear response using environmental manipulation, you are more likely to make them vote in a rightwing way.