Glossary of Weight Loss Terms

Your health care provider may use the following terms when discussing your weight. Here’s what the terms mean:

Aerobic activity: Any physical movement that makes you breathe hard and increases your heart rate for a certain period of time

Body mass index (BMI): A way to tell whether a person is underweight, at a healthy weight, overweight, or obese by measuring weight in relation to height

Calorie: A measurement of food energy

Metabolism: The process by which the body converts food into energy

Obese: A BMI of 30 kg/m2 or more

Overweight: A BMI of at least 25 kg/m2 but less than 30 kg/m2

Portion: The amount of food eaten at one time, which may be more or less than a serving size

Serving size: The amount of food listed on a Nutrition Facts label—for example, number of pieces or ounces

Target heart rate: A desired range of times that your heart beats per minute

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