Serving size: an amount of food determined by information gathered from national food consumption surveys. Typically seen on a food label.
Potion size: an amount of food that you choose to eat. This could be a single serving of something, half the serving, or double the recommended serving size.
Knowing the serving size of a food is helpful because based on this figure you can determine how many calories and nutrients are in an X amount of food. You should then use this information to help you figure out what your portion size should be. Just because the package says 23 Fritos are a serving doesn't mean that you should eat 23 Fritos. Instead you should ask yourself the following questions:
- Am I hungry?
- What have I eaten thus far and what do I plan on eating later on?
- Does this food provide my body with anything beneficial?
Don't let a food label boss you around! Instead let it act as your guide in letting you eat however much you think you need to be eating.