1, body mass index formula:
Body mass index (BMI) = weight (kg) ÷ height 2 (m)
For example, a person's height is 1.75m and his weight is 68kg, and his body mass index = 68/( 1.75 2) = 22.2. The body mass index is an index closely related to the total body fat, which takes into account both weight and height.
Body mass index is simple and practical, which can reflect the overweight and obesity of the whole body. It is more accurate to measure the risk of heart disease, hypertension and other diseases due to overweight than to identify them simply by weight.