Old people don't drain residual sperm, and young people don't eat fierce fire. When I get old, my body function begins to decline, and my energy has long since disappeared. You don't need to be too tired at this time, such as worrying about children or doing manual labor. After all, when you are old and weak, as the saying goes, children and grandchildren have their own children and grandchildren, and the elderly have to support themselves.

Eating less and not eating strong fire is actually warning young people. Young people are full of energy and naturally don't need to eat some supplements to supplement the "yang fire". Although the tonic looks very useful, it is actually affecting health. With the increase of age, these sequelae will appear.

These are the methods of keeping in good health of ancestors. Sima Qian believes that proverbs come from the people, and proverbs are the truth summed up in the daily life of ordinary people. According to Xu Shilian's "Outline of Population" in the Republic of China, the average life expectancy of the ancients was about 40 years old, and the ancients paid great attention to health preservation. According to thousands of years' exploration by ancestors, their regimen is really useful.

Ancient people would rather eat four ounces of birds than half a catty of animals. There is an ancient saying that half a catty equals eight taels, half a catty equals eight taels, and four taels is only half of half a catty. The ancients also expressed their love for birds through this sentence. Now many people like to eat things that fly in the sky and swim in the sea. In fact, it also includes health care.

You can't live in a big house with money, and you can't travel far without money. Literally, if you have money, you can buy a big house to live in, but this is actually contrary to traditional health care. As the saying goes, "Where people are inaccessible, the yang is insufficient and the yin is sufficient." Small bedroom, living for many years, will accumulate yang.

But a big house, if few people live, will look gloomy, that is, Yin Qi is on the high side. And "poor but unable to travel far" refers to a long journey. The ancients thought that "walking for a long time hurts the muscles." During the long journey, people will be affected by cold, which will lead to joint pain and fever. Therefore, if the family is poor, it is even more difficult to travel long distances. These are the wisdom of the ancients and their understanding of health preservation.