Maintain a Healthy Weight

Excess body fat leads to health problems such as type 2 diabetes, high blood pressure, and high cholesterol.
Health professionals use a measurement called body mass index (BMI) to classify an adult's weight as healthy, overweight, or obese. BMI describes body weight relative to height and is correlated with total body fat content in most adults.

BMI range:
18.5-25 -- healthy range
25-30 - overweight
30 or higher -- obese

Having excess abdominal body fat is also a health risk. Men with a waist of more than 40 inches around and women with a waist of 35 inches or more are at risk for health problems.
To lose weight, you must eat less and move more. Your body needs to burn more calories than you take in.
Exercise improves heart function, lowers blood pressure and blood cholesterol, helps manage diabetes, and helps control weight.