Moderate exercise for middle-aged and elderly people, on the one hand, can only do moderate exercise. After decades of ups and downs, the "parts" of life have been worn and aged to varying degrees. On the other hand, middle-aged and elderly people need moderate exercise. I can't do without exercise. Hit Tai Ji Chuan, jump in the afternoon and walk. The human body is fully adjusted during the exercise, and the organs and functions of the living body are dynamically balanced. Walking after meals is the best exercise for middle-aged and elderly people, with a balanced mind and a happy mood. The adjustment of mentality and mood can only depend on yourself, and others can't help you. Most things in the world are not as good as people want. "The melon is not round, and people are not perfect." This is the best comment. We should be good at narrowing and weakening troubles, amplifying and strengthening happy things, thinking more about happy things and less about things that go wrong, being a little confused about small things, being tolerant of people and being smart about life. People who always compare their own shortcomings with others' strengths are asking for trouble, and those who use the thinking of "having nothing to do" will always be content. Unhappy people rarely live a long and healthy life. A balanced mind and a happy mood are health preservation. Generally speaking, a reasonable diet means a diversified diet, eating everything, enough is enough, coarse and fine, less meat and more vegetarian, sweet and light, quitting smoking and limiting alcohol, no.