Your friend Emily has just started a new fitness program and wants to know if a scale is a good way to track her progress. Give your opinion and justify your response with examples from this lesson.

Answer:

Although a scale will measure one's total body mass, it does not determine the lean-to-fat ratio in a person's body, so it's important to remember that muscle weighs more than fat. Also, it's essential to remember that body fat is necessary for the body to function effectively.