I think you're creating a false dichotomy in your mind though, since a lot of these other things you learn will actually be part of your down-time so to speak and they will cross-pollinate more than you think.

In this video you see more than just learning to dance for example, you see someone going from being afraid to fully express herself to purposefully giving everything she's got in the moment; a very powerful skill to have.

I recently started a writing course for example and I've been finding parallels between writing and coding that've been incredibly helpful in starting to do persuasive copy in my startup.