As winter sets in, many people report increased fatigue—a symptom commonly associated in traditional Chinese medicine (TCM) with a condition known as yang deficiency. Yang is regarded as the vital driving force that maintains normal bodily functions and helps defend against external pathogens.
According to the fundamental theory of yin and yang in TCM, all aspects of the natural world exhibit paired yin and yang characteristics. These opposing but complementary forces appear in various ways, such as the contrast between earth and sky or cold and heat.
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