1. Religion & Spirituality
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Definition: Neidan is the Taoist practice of Inner Alchemy. In Inner Alchemy practice, the human body becomes a laboratory, in which the energetic elixirs of refined Jing, Qi and Shen (the "Three Treasures") are cultivated and circulated. It is contrasted with Waidan - Outer or External Alchemy - in which herbal or mineral formulas are ingested by the practitioner. In Inner Alchemy, the body, mind and breath of the Taoist practitioner are used to bring about internal transformations.

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