in no particular order: reading, walking (LOVE IT!), cooking, swimming, ikebana, choir singing, photography, sculpture, other kinds of dances (ballroom and ballet and some folk dancing), gardening, learning languages
I've been training and competing in Brazilian Jiu Jitsu and Muay Thai for over ten years. I've never mentioned this in Tango class so I'm sure that my dance partners wonder why I often look like I just lost a fight. I also love lacrosse, cycling, and ski/snowboarding.
Other than tango, the things I do with most frequency are gardening (and I have a backyard that will take me several years to transform, so I'm set for awhile on that score), reading, and I have become an amateur student of diamond history and general gemology because of my interest in antique jewelry.