Eat less and eat more, but don't increase the amount of food per meal. Because most people who are thin have weak gastrointestinal function, eating too much at a meal often cannot be effectively absorbed, but it will increase the burden on the stomach and cause indigestion. You can change the number of meals per day to 4~5 meals.

Based on the principle of digestibility, high protein and high calorie, the food gradually increases the intake of various nutrients, such as chicken, fish fillets, green vegetables, sea cucumbers, butter and cream.

Eat what you want to eat to promote appetite. At the beginning of the "fattening" plan, you can choose some cuisines you want to eat to stimulate your appetite that has been in a state of exhaustion for a long time. It is suggested to buy some special cookbooks with beautiful pictures and cook all kinds of delicious food in a variety of ways.

Let the diet that is good for you be seen everywhere. In addition to regular meals, you should eat some snacks in moderation. At ordinary times, you may wish to put some snacks with certain calories within your reach, such as biscuits, raisins, mung bean cakes, sausage bread, whole milk powder, chocolate, etc., and eat them if you want. Eating with oranges, oranges and other fruits, or adding fruit juice to whole milk powder, can help the body consume more calories.

Avoid eating foods that are irritating, easy to produce gas, and have too much crude fiber, because such foods are easy to make people feel full and reduce food intake.

If necessary, appropriate vitamins and trace elements can be supplemented; Or take some Chinese patent medicines for regulating the spleen and stomach, such as hawthorn pill and Zhusha Yangwei Pill.

Eating at night should not be too much, otherwise it will increase the burden on the stomach, which is not conducive to health and sleep, and is not good for bodybuilding.

Pay attention to control the intake of fat, and don't eat too much fatty food for short-term fattening effect, which will not gain weight but will cause coronary heart disease and other diseases.