Many people want to increase their muscles and make their figure look more beautiful through exercise, so these people have higher requirements in their daily life. Not all foods can be eaten, because most of the foods they need are high-protein, low-calorie and low-fat foods. Therefore, in the process of exercise and muscle building, high-calorie and high-fat foods must be eaten less, even in daily life. Then, lean beef is a good food for bodybuilding and muscle building. Lean beef is rich in trace elements such as protein and fatty acids, which can not only provide nutrition for bodybuilding and muscle building people, but also ensure their health. So beef can be said to be the most important food in the process of fitness and muscle training, and it has a particularly good effect on muscle exercise after fitness. No matter what kind of beef it is, it will be better than other foods, so beef can be the first choice in the process of fitness. Besides beef, chicken breast is a low-fat and low-calorie food, and the content of protein and other nutrients is also high. On the premise of not providing a lot of heat, it can also provide a lot of high-quality protein and help to keep fit. Then, apart from chicken breast, it is our daily choice of eggs, because eggs contain a lot of digestible amino acids and protein, which can provide a variety of nutrients for the human body, achieve the effect of reducing fat, increase the muscles of the human body and reduce the body fat rate. Then, in addition to these common foods, there are some rare foods, such as yogurt and salmon. Salmon may be an expensive food in the process of fitness and muscle gain, which is very suitable for people who lose weight and gain muscle.