Eating less staple food does not necessarily make you thin. The body becomes thin with the amount of diet consumed, the amount of exercise of the organism, and the individual’s physique and other factors. If the amount of staple food eaten is small, but too much snack intake, or intake of high-fat and high-calorie food, such as fried food, fried chicken, French fries, etc., the body’s calories are too much, and will not be thin, but will be obese. Staple foods are mostly rice, pasta and mixed grains, which are the main source of providing the body with energy. If the total calorie intake is insufficient, the daily intake of energy is insufficient, which may affect daily life. Weakness, loss of energy, and concentration problems occur. Eat less staple food is not necessarily thin, to make the body thin, to eat a reasonable diet, eat less fried food and food with high sugar content, strengthen the exercise, the body intake is less than the consumption, adhere to it will become thin.