1 Eat more melons and vegetables, and the water content is above 90%. All melons and vegetables have the function of lowering blood pressure and protecting blood vessels. 2 eat more cool vegetables and eat more cool vegetables, which is conducive to promoting fluid production and quenching thirst, relieving summer heat, clearing away heat and purging fire, detoxifying and relaxing bowels. Cucumber vegetables, except pumpkin, are warm, and others, such as bitter gourd, loofah, cucumber, cauliflower, watermelon, wax gourd, tomato, celery and lettuce, are cool vegetables. Eat more "sterilized" vegetables, such as onions and garlic, which are rich in broad-spectrum fungicides, killing and inhibiting various cocci, bacilli, fungi and viruses. Among them, the most prominent role is garlic, which is best eaten raw. 4. Have porridge for breakfast and dinner, and soup for lunch. Mung bean porridge, lotus leaf porridge, red bean porridge, mint porridge, auricularia auricula porridge, kudzu root porridge and bitter melon porridge are all good foods in summer.