You might not realize just how quickly calories can add up. An extra tablespoon of salad dressing can add 75-100 calories, an extra tablespoon of butter adds 102 calories, and that 1-ounce bag of chips with your sandwich at lunch adds 162 calories. Eating while cooking, starting each day with a high-calorie coffee drink, finishing off the kids' plates at dinner, or having one too many glasses of wine -- these are just a few of the sneaky habits that sabotage weight loss efforts.