The fastest and most effective way for high school students to lose weight is to first control the total calorie intake, an average person needs about 1500kcal of total calories per day. To lose weight the fastest must control the mouth, reduce the total calorie intake, control the total calories per day within 1200kcal, or even within 800kcal, can be effective for rapid weight loss. Try to eat less white rice, white noodles, eat less all kinds of fried food, less processed desserts, less processed meat products, and then pay attention to increase exercise, you can do resistance exercise and aerobic exercise, such as running every day for more than 30min, or do flat support, push-ups and other resistance exercise every day, can effectively increase the consumption of energy. Through these two efforts to reduce energy intake and increase energy consumption, you can lose weight quickly and effectively.