Body fat represents the fat contained in the body, and body fat percentage is generally used to indicate the percentage of fat contained in the body. Body fat percentage can be measured by body fat scale, skinfold clamp, calculation method, etc. 1. Body Fat Scale: By using a professional body fat scale, the fat content of the body can be estimated based on bioresistive resistance analysis. 2. Skinfold pliers: Using skinfold pliers to measure the thickness of subcutaneous fat in body parts, such as the abdomen, the fat content of the whole body can be estimated. 3. Calculation method: first calculate the body mass index BMI, BMI is weight (kg) / height squared (m), after the formula to calculate the body fat percentage = 1.2 * BMI + 0.23 * age – 5.4 – 10.8 * gender (male 1 female 0) Normal body fat percentage is 15% to 18% for men and 20% to 25% for women. Maintaining a normal body fat percentage plays an important role in preventing hypertension, cardiovascular and cerebrovascular diseases.