In fact, health care is not only at home, but also abroad. After decades of research, a German medical expert recently warned middle-aged and elderly people that if they want to live a long and healthy life, they must use the words "keep alive, transfer, participate, sleep, adjust and listen". "Protecting" means keeping the brain active, so middle-aged and elderly people should use their brains more, such as reading newspapers and books, drawing and playing chess, and cultivating hobbies in all aspects. Research shows that the 65-year-old people who often use their brains are no worse than the 35-year-old people who don't like to use their brains. "Living" means moving your fingers. As the saying goes, fingers are handy, and frequent finger movements can stimulate the two hemispheres of the brain, which has the functions of strengthening the brain, improving intelligence and delaying brain aging. "Turn" is a movement that changes different properties. After long-term monotonous work or reading and writing, we should change other activities of different nature in time, so that the brain nerves can be relaxed without excessive fatigue, and the brain power can be kept in the best state. Walking and doing gymnastics are good ways to change activities. "Participation" means participating in social activities and sports activities, making young friends, thus accepting the infection of youthful vitality, always maintaining a happy mood and getting rid of the isolated living environment. Active and interesting sports activities can promote the elimination of fatigue, strengthen the body and improve health. "Sleep" means to have a good sleep and ensure adequate sleep. Middle-aged and elderly people should learn to live regularly, arrange work and rest time reasonably, and ensure 8 hours of sleep every day (about 0/0 hour for the elderly). "Tune" means to adjust the diet to match the thickness, mix meat and vegetables, eclectic, eat more red dates, milk, soybean milk, egg yolk, mulberry, mustard, sesame, walnut, lily, pig brain, pig heart, fungus and most fruits and vegetables rich in vitamins and minerals; Eat less animal fat and sugary food. "Listening" means listening to beautiful and moving songs. Beautiful melody can adjust the function of the central nervous system and make people feel relaxed and happy.