I LOVE ZUMBA. It's so fun and it definitely burns off a ton of calories. If I compare it to walking/running on a treadmill which can make me burn 200 calories in about 20-30 minutes, (it says so right on the machine.lol) it's mind boggling how many calories an hour of intense Zumba can do. I don't care what anyone says, lots of exercise burns fat and helps you lose weight along with not eating fattening things, especially if you do the exercise not too long after you eat. When I started losing weight when I still lived in Idaho, I beefed up my exercise...started running and some walking 3 miles a day every day. I didn't start dieting right away and I lost quite a bit each week. So, I don't believe it that exercise doesn't help you lose fat. (It's not always about weight, since muscle weighs more than fat. It's about losing fat, for me anyhow) When I started eating better, of course, then it really came off much faster. Also, being toned and in shape makes your clothes look better and makes you feel better, most importantly. But I slacked off a little a week or so ago when I was scared to do anything much following a hospital ER visit. Now, I'm starting in again. It's amazing how little time it takes to get out of shape again. I'm huffing and puffing so much quicker than I did when I had been doing it regularly. But definitely, exercise alone won't work as well as diet and exercise.