An illustrated guide to the three principal Nadis of the subtle energy system. A meditating figure is shown with Sushumna rising along the central axis of the body, while Ida and Pingala intertwine around it from the base of the spine to the head. Sushumna is associated with the main energetic channel, balance, and spiritual awakening; Ida with the left side, feminine energy, calm, and cooling qualities; and Pingala with the right side, masculine energy, warmth, and activation. The image symbolises the harmonious circulation of Prana through the chakras and the balance of complementary energetic forces.