I never thought someone would compare polymaths (let's call it, intellectual or mental power) to people with great athletic ability (let's call it, physical power)

Although thinking about it a bit more right now, I don't see why someone shouldn't be able to be great at a wide range of physical activities to be considered a polymath - as opposed to both physical and mental activities, or solely just intellectual activities

If someone excels in a great deal of, say, a number of sports (which I admit, would be nigh impossible in the current age with all the professional sports leagues and their exclusiveness), one could probably argue that that person is a genius