Nutrients can promote gastrointestinal peristalsis and digestion. There are many nutrients in protein, such as vitamins, which have the function of relaxing bowels and strengthening the body. Eating lettuce in moderation can improve iron deficiency anemia. Lettuce is the best vegetable in spring, but it will get angry if you eat too much, so you should eat it in moderation. The third kind of celery is easy to get angry in spring, and celery has the functions of clearing away heat and reducing fire, calming the nerves and diuresis.