Humans come in all shapes and sizes, there is fat and thin and tall and small. Scientists and doctors don't just measure what you weigh, they look at your BMI (Body Mass Index). This compares your body mass with your height in a simple formula
BMI = body mass in kg
(height in metres)squared
Most people have a BMI of 20-30, but if you are below 18.5 or above 35, you may have serious health problems.
If you take in more energy than you are using, the excess is then stored as fat. You need some body fat to cushion…