The way to preserve one's health is to do it properly, which means that the way to preserve one's health lies in wisdom. According to relevant data, the way of keeping in good health requires not only methods but also wisdom. Health preservation is to raise the five internal organs. The five zang-organs are the five zang-organs in ancient books, which means hiding. Hiding is to store the yang and the nutrients of the body, so that the body can't just rely on "borrowing" to operate.