Use a different fat burning method.
Ever hear of HIIT? (High intensity interval training)
Basically, warmup however you want. Then, you go really hard for a minute, rest for 30 seconds. Really hard for a minute, rest 30 seconds. Do it for about 20 - 30 minutes. You can do whatever you want. Jumprope, mountain climbers, jumping jacks, etc. I do this to avoid long boring cardio sessions. Its about a 30 minute cardio workout, plus it revvs up your metabolism.
Another way is to, early in the morning, do resistance training. But, make it a cardio workout. Should take about 30 - 45 minutes. If you want, you can do it before breakfast, so you burn stored calories easier. But anyways, heres an example of one of these:
Dont stop the entire workout, go right from one thing to the next (so its cardio/resistance at the same time, without losing ANY muscle, plus it will boost your metabolism all day) Doesnt require any weights.
-5 minutes jump rope, as warmup
-1 minute plank, 1 minute side plank, 1 minute other side plank (x3)
-36 body squats
-40 bycycles (40 each leg, so its 80)
-18 lunges (18 each leg, I mean)
-18 squat jumps
-18 lunge jumps
Then, do the entire thing again.
This seems easy, but its one hell of a workout. I'd be impressed if you got through the entire thing without rest.
I got a workout similar to this from my personal trainer. I'm also in school to become a trainer, and I've been into bodybuilding type things for a long time now.