What is one limitation of using BMI in fitness assessments?

The limitation of using BMI (Body Mass Index) in fitness assessments lies in its classification system, which can inaccurately label individuals with a high level of muscle mass as overweight or even obese. BMI is a simple calculation based on height and weight, providing a general indicator of body fat, but it does not differentiate between muscle and fat. This means that very fit and muscular individuals, such as athletes, might receive misleading classifications that suggest they are unhealthy or overweight, despite having low body fat percentages and high physical fitness levels. This oversimplification can hinder accurate health assessments and lead to misconceptions about an individual's overall fitness and health status.