Muscle, Fat, & Obesity Risk
Why you should focus on Body Fat Percentage over BMI
BMI is determined by dividing your weight by your height squared. BMI is just a single value that does not differentiate between fat or muscle mass. If you use BMI to track your fitness progress, you will never know if the changes were in fat or muscle.
BMI may also oversimplify health risks. Two people with the same height and weight would have the same BMI and health risks—even if one of them has a healthy amount of fat and high muscle mass.
On the other hand, PBF puts your weight into context by showing how much of it is fat mass. Tracking changes in your body fat percentage lets you focus on actual fat loss, not just weight loss, which can also come from muscle mass.
WHY THIS MATTERS
A graph like this can be a real eye-opener because it shows that negative body composition changes can occur if your weight remains the same or even decreases for the wrong reason.
When assessing your current obesity level and the associated health risks, use Percent Body Fat (a.k.a. Body Fat Percentage) because it reveals how much of your weight is fat. BMI is a poor indicator of obesity risk but is on the Result Sheet for reference purposes