The reason for practicing abdominal muscle stomach instead of becoming bulging, mainly with the method of training has a lot to do with. First, warm-up training lateral press, arrow press, jogging, high leg lift. These exercises can stretch the ligament muscles open to prevent muscle strains in the process of training. Second, abdominal training through sit-ups to abdominal training. Abdominal contraction until the maximum, so that the abdominal muscles can withstand the most maximum maximum frequency of contraction until exhaustion. It is recommended to do a group of 10-20, 3-4 groups at a time, 1-2 minutes between groups and groups. Third, jogging relaxation training. After doing sit-ups can not immediately rest, because the body has been in a fat burning state, if immediately stopped, the lactic acid accumulated in the body will not be metabolized, this time to jog to let the lactic acid completely metabolized. In addition to training but also control the diet, in the training process must not overeat, but also can not eat fried and high cholesterol food, so as not to increase fat.