Level 1: Diet and Nutrition 1.1 How to eat reasonably to increase resistance? Children\’s bodies need various nutrients to maintain growth and health, so a reasonable diet is the key to increasing resistance. It is recommended that parents provide their children with a varied and balanced diet, including protein, carbohydrates, fats, vitamins and minerals. In particular, foods rich in vitamins C, E, zinc and other elements can improve children\’s immunity. 1.2 The impact of food safety on children’s resistance