Weight loss and body fat reduction has a lot to do with calorie consumption. Most Americans, who decide to embark upon a healthy lifestyle, are not grotesquely overweight. They are not the people you see on these weight loss reality shows. Most people are slightly overweight. More times than not, this has to do with not eating enough. Many people just eat once or twice a day. Yet they still see the numbers on the scale and pants/dress size keep increasing. This is because their bodies are storing everything the eat as fat. To stop this, you need to know your Basal Metabolic Rate (BMR – amount of calories your body burns at rest) and the number of calories you should consume daily.