We had a party at my house once where we had a pretty famous software engineer show up (without mentioning any names). There were a couple of hundred people at this party. All throughout the party, for hours, this somewhat famous guy was surrounded by geek-hanger-ons.... all asking him geeky questions. As it happens, he had just recently lost 30 pounds. Well, the next morning it was just a small circle of close friends who had spent the night, and at breakfast the women had him literally surrounded and we were all asking him how he'd lost the weight. It was just like the geeks only not.
Anyway, he did it all through diet -- he said he looked at how many calories you burn working out, and he decided it would be much easier to lose weight by cutting calories rather than trying to burn them off. I think the summary of what he had done was give up beer and to have oatmeal for breakfast, but no exercise. Of course, that's not what we're here for!!!