The most common method to measure healthy weight is by using the Body Mass Index (BMI). BMI is calculated by dividing a person's weight in kilograms by the square of their height in meters. The following categories are generally used: - Underweight: BMI less than 18.5 - Normal weight: BMI 18.5 – 24.9 - Overweight: BMI 25 – 29.9 - Obesity: BMI 30 and above
Other methods include waist circumference and body fat percentage, which can provide additional insights into a person's health status.