The process of nourishing the heart is to constantly adjust one's mentality and keep it. Chinese medicine believes that the heart is centered on God, which is our normal biology. To a large extent, it is a person's mentality. The process of nourishing the heart is to constantly adjust one's state of mind, so that one can decisively put down what should be put down, because thinking too much when one is old will consume a lot of brain power, cause irreversible damage to the brain and affect us.
People have experienced many ups and downs in their lives, no matter people 50 years ago or people now, they have experienced too many successes and too many failures in their lives. There may have been a friendship, a love, because some accidents missed a lot of feelings. Maybe it's a pity that some things have passed, but when you get old, you should put them down appropriately. These regrets can only be a kind of regret, because simple thinking takes a long time.
Mood affects the body. We can get this conclusion from small examples in life. For example, when people are particularly angry, they will obviously show the trembling, numbness and weakness of their bodies, or the sudden increase of strength can't control themselves. This is that our mood affects the hormone secretion of our body and indirectly affects the normal operation of our body. Therefore, if you want to have a beautiful old age, you must control your mentality, don't be happy about things, and don't be sad for yourself.