I really love yoga. I love the mindfulness of it, where not only are you exercising your body, but you're also building that mind/body connection as far as being aware of every movement - what your body's doing, how your body's feeling.
It's hard after a long day at work to still get your butt up and go to the gym, so classes are the best motivators for me, or if I have a trainer. I had a trainer for a while, and that was cool because you just show up, and they tell you what to do.
Chicago has quickly become one of my favorite places in the world.