What range is considered ideal for your gender?
Or why you should even care?
Your body fat percentage is a value that tells you how much of your body weight is made up of fat. In terms of your overall health, your body fat percentage can be one of the most useful numbers available to you, more than how much you weigh and even more than your Body Mass Index (BMI).
You might argue that you can just rely on visual appearance, everyone knows what an overweight or obese person looks like.