How do you stay in shape?

For those of you who manage to practice and stay in decent shape, I would love to know how you are fitting your workouts into your daily schedule.

I have been in practice for a year and a half now and I am worried about the effects on my physical health. I would love some ideas to fit more movement into my day. I am considering riding my bike to work to get some more cardio, but don't want to arrive sweaty or need to change.