Real people are the highest realm of practice. "Lift the heavens and the earth, grasp the yin and yang, breathe the essence, keep the spirit independent and the muscles consistent." Their life span is the same as that of heaven and earth, and there is no end.
"Real person" is an idealized and perfect person, which also reflects our pursuit of health and life to some extent.
People are the second kind of people. They are "all-round morality, harmony between Yin and Yang", real people grasp Yin and Yang, and people are in harmony with Yin and Yang. What is harmony? Different from the focus, but very harmonious.
Once again, saints are for most people. Compared with the first two, they can't change heaven and earth or reconcile yin and yang, but they "reconcile heaven and earth" and obey the changing law of the Eight Winds. Not divorced from the secular, hobbies, daily life, actions and secular unity, do not pursue maverick. Regard tranquility and pleasure as the pursuit of great events, and take self-feeling as the symbol of success. In this way, the life can reach 100 years.
The last layer is the sage. They "govern heaven and earth, such as the sun and the moon, distinguish the stars, keep yin and yang, and divide them into four seasons". They can keep the ups and downs of yin and yang, adapt to the changes of the four seasons, and make their lives conform to the way of health preservation.
In fact, it is difficult for us to become the above four kinds of people, but in the face of the complicated world, we strive to maintain a normal heart and adapt to the four seasons to keep fit. Hide the spirit in it to stay away from the disease?