More and more people began to enter the gym to exercise. In the process of fitness, if you want to increase muscle, you must follow some principles to promote muscle growth, otherwise it is likely to have some irreversible effects on your body. Some fitness experts may reasonably match the diet, not only to achieve sufficient energy, but also to ensure the nutritional needs of the body. Muscle-building meals are generally not as expensive as possible in the selection process, but need to be reasonably matched. You must help muscle growth according to your diet structure, and ensure that you can take in the nutrients needed by the human body every time you eat, so as to promote the rapid growth of muscle. The principles that should be paid attention to in promoting muscle growth of muscle-increasing meals generally include a balanced nutrition for each meal, including a balanced ratio of fat, carbohydrate and protein. Protein is an indispensable substance for the rapid and healthy growth of muscles, but the nutrients needed by the human body must also contain carbohydrates and fats. Therefore, when choosing a fitness meal, try to eat a hearty meal in the morning, eat more coarse grains at noon, and eat some foods that help to digest quickly at night. Then another principle is that when choosing vegetables, it is best to choose cooking methods, be sure to have less oil and salt, and remember to have less sugar, because these materials will have a certain impact on fitness, especially oil and sugar. Then other principles include eating less and more meals every day to ensure that you can eat enough nutrition every day and ensure the healthy growth of muscles. If you can't meet your nutritional needs, then your body is in an unhealthy state, so it is difficult to promote muscle growth healthily. Also, you must not eat too much every time you eat a muscle-building meal, just reach about eight points full, otherwise it is likely that eating too much will lead to serious physical load, which is not conducive to increasing muscles in fitness exercise.