I think it's time to up the total amount of time spent working out per day. I didn't want to add to my 30 minutes until it became enough of a habit that I knew I wouldn't get discouraged. I've been consistent enough that if I bite off more than I can chew, the most likely thing is that I'll just go back to 30 minutes again, instead of abandoning the whole shebang.

So, starting today, I'm going to add an extra 10 minutes of cardio at home. I'll post again to confirm that I followed through with it.