My non-comics-making hours are spent playing video games (right now it's a bit of Overwatch, Tales of Zestiria, Broken Age and Gone Home), trying to catch up on One Piece - I'm some 30-40 episodes behind - digging through Netflix to see if there's anything to watch, catching up on all the movies I missed when they were in cinemas (finally got around to watching Zootopia the other week!) and also reading. A whole bunch of reading.
I'm currently tackling Joe Abercrombie's Half a King-trilogy, and I just got finished reading Dune.
As for how many hours I spend making comics... I'm a freelance artist currently between big assignments (I'm flatting a friend's pages, but that's about it right now), so I devote most of my days to my comics. So I'd say I spend 8-12 hours a day on my various comic-projects? Not all of it is drawing pages, though - I write, I thumbnail, I research, I plan, etc.
Also, somewhere in the middle of this mess I find the time to a.) draw stuff that isn't comics, and b.) play Dungeon World once a week.