Keyword 1: sleep late and wake up early, nap is very important Summer night heat, early dawn time, the elderly can be appropriate to sleep later, get up earlier. In addition, in the summer afternoon, it is best to arrange a nap, to eliminate fatigue can play an important role. Keyword 2: Hydration Drink less and more, don’t drink water only when you are thirsty. After getting up in summer, middle-aged and elderly people should drink some water first to replenish the water consumed at night. In addition to the normal three meals in summer, the elderly should maintain a daily water intake of about 1,500 to 2,000 ml, “to drink a small amount of more than the main, do not wait until thirst before remembering to drink water.” Keyword 3: Exercise Moderate exercise, half an hour interval before taking a shower Summer exercise for the elderly is best carried out in the early morning or cooler time in the evening, and the venue can be chosen from parks, lakesides or shady places under trees. “Walking, jogging, playing taijiquan or eight-danjin can be done, moderate activity of limbs and joints to keep the flow of qi and blood.” Keyword 4: diet melon vegetables, can make soup and cooking “summer human sweating, gastrointestinal digestion and absorption function is also weak, diet should eat light, easy to digest, water more vegetables and fruits, soup is indispensable every day.” In addition, you can also eat some “pungent” food in summer, such as ginger, onion, coriander, garlic, bean paste, etc., in order to raise the Yang Qi.