Cao Tingdong's "Lao Lao Heng Yan" mentions: "Eating less is beneficial, as the spleen can easily process and transform food into essence. Overeating, even nutritious food, can harm the spleen. Thus, eating less is key to nurturing the spleen." This means eating until you're 70% full is the way to maintain a healthy spleen.

Since the spleen is responsible for digestion and transportation, the first step in processing food is handled by the spleen. Therefore, the best way to nurture the spleen is to eat foods that support it and follow proper dietary habits. Doing both ensures a healthy spleen, which leads to a good physique and healthy skin.

Nurturing the spleen is a lifelong practice, essential for staying youthful and healthy. Continuously eating spleen-nourishing foods replenishes energy. In the Five Elements theory, the spleen corresponds to the earth element and the color yellow. Hence, the "yellow food spleen-nourishing method" is based on this theory. Yellow foods like carrots, papayas, yams, sweet potatoes, soybeans, bananas, pumpkins, and millet are beneficial.

Tips for Nurturing the Spleen:

1. Avoid Cold Foods: Limit intake of cold and raw foods like sashimi and cold drinks. Also, reduce consumption of cold-natured foods like bitter melon and watermelon to avoid harming the spleen and stomach.
2. Eat Light: Avoid overly sweet, greasy, or salty foods as they hinder the spleen's function. Opt for light, easily digestible, and varied foods. Eat until you're 70% full and avoid overeating.
3. Maintain Regular Routine: Manage your emotions and maintain a regular schedule. Proper rest can replenish energy and blood. Try to sleep before 11 PM and avoid staying up late.
4. Watch for Humidity: On humid or rainy days, avoid keeping windows open. Ensure proper ventilation and dehumidification indoors.