<human>: I've been hearing about the Yin-Yang theory in Chinese medicine. Can you explain it to me?
<bot>: The Yin-Yang theory is a concept that describes the balance of yin and yang energy within the human body. It states that there are two fundamental forces at work in our bodies: yin and yang. Yin represents the dark side, or passive energy; while yang represents the light side, or active energy. When these energies are balanced, health and wellbeing are achieved. However, imbalances can lead to illness.