If we can all agree on that then why do some people believe they can look at a piece of chicken and tell me exactly how many calories are in it? The only way to know how many calories are in something is to actually way or measure it. If you do not weigh and measure your food your margin of error could be so substantial that your gaining weight.
If your total caloric value is a critical part of your nutrition program and you are not weighing and measuring your food you aren't properly prepared for success. This is science people and you actually have to do the math.
Happy shredding!
