# Yellow Emperor's Inner Classic 16 Health Preservation Methods:

**I. Heaven-Human Correspondence (Align with Nature)**

1. Follow Yin and Yang: Emulate the yin and yang of heaven and earth; nourish yang in spring and summer, nourish yin in autumn and winter.
2. Harmonize with techniques: Practice daoyin, tuina massage, qigong, tai chi, and other methods to balance qi and blood.
3. Adapt to the four seasons: Spring generates, summer grows, autumn harvests, winter stores; adjust daily routine and diet according to seasons.
4. Avoid pathogenic factors timely: Promptly evade wind, cold, heat, dampness, and other external pathogens.

**II. Daily Routine and Diet (Consistent Lifestyle)**

5. Eat and drink in moderation: Fixed timing and portion, appropriate temperature; grains as primary nourishment, fruits as secondary.
6. Harmonize the five flavors: Balance sour, bitter, sweet, pungent, and salty; avoid excessive preference that damages the five organs.
7. Maintain regular sleep schedule: Consistent sleep-wake patterns; sleep late and wake early in spring and summer, sleep early and wake late in autumn and winter.
8. Avoid excessive labor: Moderation in work, exercise, and sexual activity; prevent "five exhaustions" (excessive reading/lying/sitting/standing/walking).

**III. Inner Spirit Preservation (Emotional Regulation)**

9. Tranquility and stillness: Few desires and minimal attachments, peaceful mind and calm spirit; true qi follows naturally.
10. Preserve inner spirit: Conserve the heart-mind spirit, avoid wasteful dissipation of spiritual qi; illness has no way to arise.
11. Will at peace with few desires: Heart unafraid and undisturbed, not swayed by external things.
12. Regulate seven emotions: Balance joy, anger, worry, pensiveness, grief, fear, and fright appropriately; prevent emotional extremes from damaging organs.

**IV. Disease Prevention and Foundation Strengthening (Root of Health Preservation)**

13. Prevent disease before it occurs: Prevent undeveloped disease, prevent progression of existing disease, prevent relapse after recovery.
14. Carefully observe yin-yang balance and regulate: Discern yin-yang imbalance and adjust promptly, using balance as the goal.
15. Moderate sexual activity to preserve essence: Practice moderation in sexual relations, preserve kidney essence, and secure the prenatal foundation.
16. Body and spirit unite: Harmonize body and mind, maintain physical health and mental peace, and live out the full span of life.