What kind of girls (or guys) do fans of the Heroes series like?

I think the phrase about engaging in sports refers to taking care of oneself in some way, and sports contribute to that. In general, you should enjoy all your activities; if you don't, either change the activity or try to minimize your involvement in it (I don't like anatomy or physiology, but I minimize my time spent on them, just enough to get a passing grade). The same applies to love.