ANS, autonomic nervous system-the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands.
Underweight: Your BMI is less than 18.5. Healthy weight: Your BMI is 18.5 to 24.9. Overweight: Your BMI is 25 to 29.9. Obese: Your BMI is 30 or higher. The chart below shows examples of body mass indexes. The figure at which your height corresponds with your weight is your body mass index. To find yours, consult the chart, or use WebMD's BMI calculator.
BMI categories are divided into four different groups. A BMI of less than 18.5 classifies you as underweight. A BMI between 18.5 and 24.9 indicates that you are at a normal weight. This represents the ideal category for women. BMIs between 25 and 29.9 are defined as overweight and a BMI of 30 or greater is considered obese.