Body Mass
Index (BMI) is an index used to estimate ones body fat.
BMI indicates your health risks by comparing your height and weight.
Males with a BMI above 27.8 and women over 27.3 are considered overweight.
Males with a BMI less than 20.7 and women below 19.1 are classified
as underweight.
There are
limitations to BMI so it's important to realize that it is only
an estimation of body fat. People who have valid reasons for maintaining
weight outside of normal ranges (pregnant or breast feeding women,
competitive athletes, body builders and people who are chronically
ill) may experience inaccurate BMI values. People with a high
percentage of muscle mass may appear overweight using BMI because
muscle weighs more than fat.