I have a friend whose mother was a pilot (great vision) and he also has good vision (at least he used to, back then). I don't think he spent more time outdoors

I have a friend whose mother was a pilot (great vision) and he also has good vision (at least he used to, back then). I don't think he spent more time outdoors than I did or stared at screens less than myself. He is not any less geeky than me. So the question is, what do we do to give happiness to everybody, for free (or at least inexpensively).