Diet: You may have the most spectacular abdominal muscles in the world, but if they are covered with fat, no one will know. Remember, if you don't eat, you won't gain muscle, but if you eat too much, you will gain fat. If you work hard and keep practicing abdominal muscles for more than a year, you still can't see it. Then you should review your diet.

Common examples are chicken, beef and eggs. ...

You can buy protein, weighting agent, etc. If there are conditions.

Frequency: practice abdominal muscles every other day. Although most people only practice three times a week.

Quantity: Although many people do hundreds of sit-ups at a time, I suggest you choose the 2 14 exercises that are most effective for you, and only do three groups, 30 to 50 times in each group, and each group should be completely exhausted. My abdominal muscle training never exceeds 15 minutes.

Weight: The greater the weight used by abdominal muscle training, the greater the possibility of irregular movements and the thicker the waist. The idea that gaining weight can burn more fat is wrong. So I suggest you use tension and control instead of weight bearing, and tighten and stimulate your abdominal muscles with your mind.

Constant tension: when practicing abdominal muscles, keep the whole group of abdominal muscles constantly tense, and don't let them relax at the beginning or end of the action. Always reach complete exhaustion. Each group should be completely exhausted. Not counting the times. Keep doing it until your abdominal muscles can't contract any more. When you don't have to straighten your abdominal muscles completely. Don't arch your back, but hold your chest slightly. So as to concentrate the tension on the abdomen. The straighter the upper body stretches, the more power is exerted on the buttocks, which not only reduces the pressure on the abdominal muscles, but also increases the risk of lower back strain.