Śivasaṃhitā 2.26

Piṅgalā embodies the solar principle within the subtle body: fiery, active, and masculine in quality. Its path mirrors Iḍā’s but in reverse, confirming the bilateral symmetry of the nāḍī system. Just as sun and moon govern external time, Piṅgalā and Iḍā govern the practitioner’s internal rhythms, alternating in dominance throughout the day in a cycle known as the svara.

The name piṅgalā means ‘the reddish’ or ‘the golden one’, evoking the color of fire and the rising sun. This subtle chromatography is not merely poetic: in tantric physiology, colors assigned to channels indicate precise energetic qualities. Piṅgalā carries the heat of agni (fire) and is linked to sūrya (the sun), governing digestion, willpower, and outward-directed action.

When Piṅgalā predominates, the right nostril flows more freely. Haṭha Yoga texts, including the Haṭhapradīpikā, describe this state as favorable for physical exertion, digestion, and extroverted activity. The sūryabhedana prāṇāyāma, which inhales exclusively through the right nostril, deliberately stimulates this channel, increasing internal heat and vital energy.