In general, as far as activities go, they kind of vary. I like to watch TV shows. Sometimes cartoons and less often, they have actual people. I watch a lot of political news shows (e.g. The Young Turks, Daily Show, Colbert Report). I watch movies on my mini projector like once a week or play videogames once a week. I will sometimes practice playing piano.
I work out 4 days a week. I also like to watch what I eat both in terms of quantity and quality. Which is also why I neither drink nor smoke.
Once a week, I like to meet up with friends to play either a card game called Android Netrunner. The game is challenging and involves strategy. So, I enjoy those aspects.
Once in a while, I'll go to TEDx meet ups in Houston. I like to have discussions. Having discussions with people who are articulate, give justification for their thoughts, and challenge my thoughts is probably my favorite activity.
Activities that I have not done, but would be interested in are as follows: going to a comedy club, rock climbing, going to a trampoline park, go kart racing, playing paintball, going to a concert, plays, and... I'm open to other ideas if you have any.