Body fat generally refers to body fat percentage, with the normal range of body fat percentage for boys generally ranging from 15% to 18%, and for girls generally ranging from 25% to 28%. Body fat percentage is the percentage of fat in the body out of the total body weight and reflects the fat content of the body. Typically, the range of body fat percentage is usually 15% to 18% for boys and 25% to 28% for girls. If the body fat percentage is high, it may increase the chance of diseases such as high blood pressure and coronary heart disease, and if the body fat percentage is low, dizziness and decreased immunity may occur. Pay attention to your diet in your daily life, try not to be partial to food or picky about food, and you can have proper exercise to improve your body resistance. If you find that you are not feeling well, consult a doctor in time.