Beef is indeed a high-calorie food, with an average of 125 calories contained in 100g of beef. If one is on a diet, eating beef in moderation will not usually cause one to gain weight. Although the calorie content of beef is relatively high, but the main component is protein, the fat content and carbohydrate content is very low, and beef contains carnitine, which can promote fat metabolism, is conducive to weight control and muscle growth.