Keeping in good health in spring should follow the principle of nourishing yang and preventing wind. The yang of the human body conforms to nature and diverges upward and outward.

In summer, keeping in good health focuses on mental adjustment, maintaining a happy and stable mood, and avoiding great sadness and rejoicing to avoid summer heat.

Health in autumn depends on nourishing yin and preventing dryness. In autumn, the yang gradually closes and the yin gradually grows, so maintaining the yin in the body becomes the first priority.

Winter is the season of storing essence, and the period from beginning of winter to beginning of spring is most suitable for winter tonic.