The strategic role of Pi Gu during a
Darkroom retreat is to facilitate a massive redirection of internal resources. Digestion is an extremely high-energy process; by significantly reducing the workload of the digestive tract, the body can redirect that liberated energy toward the high-level Inner Alchemy practiced in the darkness. In this environment, the absence of external stimuli allows the practitioner to turn completely inward, where the "Pi Gu effect" becomes a catalyst for deep cellular and spiritual transformation.
The typical Darkroom regime involves a 50% reduction in food intake, systematically replaced by increased saliva production and the practice of "Eating the Cosmos." Practitioners do not feel weak or hungry because they supplement their nourishment with the inhalation of cosmic particles. As food or liquid moves over the five taste areas of the tongue, it informs the thalamus and hypothalamus to "pre-order" the exact digestive juices needed.
This conscious movement of energy activates what we call the "Fountain of Youth." By stimulating sexual hormones through the testicles, nipples, and genitals, and directing this energy upward, the practitioner triggers the major brain glands – the pineal, hypothalamus, and thalamus. The pineal, the gland of light and darkness, begins to secrete a "nectar" or elixir that flows down to nourish the entire system.