Ah, it's a waste of time anyway. I took martial arts for ten years, three different forms, but it wasn't superly beneficial. You're better off just disciplining yourself to attain better results than what martial arts promises.
1) eat healthy
2) exercise (no need to go to a gym or anything, as simple as push ups, sit ups, curles, etc...)
3) stretch before and after every workout
4) jog a few miles every morning (wake up early)
All of the above will get you in excellent shape, much more than martial arts can ever do. As for self defense, it kinda ties into being healthy. You could always self train, buy a punching bag, and such.