Hey, you must have burned more calories at work then. LOL
Dr. NO seems to bear out my statement that more muscle burns more calories. Start lifting weights or doing pushups!
...The higher your body fat percentage, the fewer calories you'll burn (lower activity level, and less muscle to burn calories). The lower your body fat percentage, the more calories you'll burn (bigger muscles burn more calories than little ones). Thus, it becomes much easier to get rid of fat permanently by increasing your metabolic rate. You do this by increasing both your muscle mass and your activity level. You can (and SHOULD) gain muscle mass and lose fat at the same time. Never sacrifice muscle tissue during the fat loss process. Instead, build more muscle to burn more calories. You'll lose more fat faster, and you'll be more likely to keep it off. The KEY is to control your calories!