The upa-pranas are the five minor vital airs of yoga’s subtle physiology—Naga, Kurma, Krikara, Devadatta, and Dhananjaya. While the five major pranas govern your core life processes, these lesser-known currents control reflexes like burping, blinking, sneezing, and yawning. This guide explains what each upa-prana does and how to work with them in practice.
What Are the Upa-Pranas?
In yogic anatomy, prana is the life force that animates the body, and it moves through the system in distinct currents called vayus (“winds”). Most students learn the five primary vayus first, but classical texts such as the Goraksha Shataka and later hatha yoga compendiums describe five additional currents known as the upa-pranas, or sub-pranas. The prefix upa means “secondary” or “subordinate,” so the upa-pranas are best understood as supporting players that handle small but essential involuntary actions.
Where the major vayus manage breathing, circulation, digestion, and elimination, the upa-pranas govern the body’s reflexive housekeeping: belching, opening and closing the eyes, hunger and thirst, sneezing, yawning, and even the energetic processes that continue immediately after death. They operate largely below conscious awareness, yet recognizing them deepens your understanding of how prana keeps the body running moment to moment. They are part of the pranamaya kosha, the energy sheath that bridges the physical and mental bodies.
Upa-Pranas vs. the Five Main Vayus
Before exploring each sub-prana, it helps to place them in context. The five primary vayus are the foundation of pranic anatomy. Prana vayu governs inhalation and intake at the chest and head; apana vayu governs downward elimination in the pelvis; samana vayu governs digestion and assimilation at the navel; udana vayu governs upward movement, speech, and growth in the throat and head; and vyana vayu governs circulation throughout the whole body.
The upa-pranas are not separate from these—they are refinements and offshoots that handle specific reflexes the major vayus do not address directly. Think of the five vayus as the major departments of a large organization and the upa-pranas as the specialized support staff who keep small, recurring tasks running without disrupting the main operations. You can find concise definitions of these and related terms in our yoga terms library.
Naga Vayu — The Air of Eructation
Naga means “serpent,” and naga vayu governs eructation—belching and burping—along with hiccups. Its job is to release trapped air and excess pressure from the upper digestive tract, preventing bloating and discomfort. Energetically, naga vayu is also associated with the sudden release of stagnant or blocked energy, much as a snake sheds its skin.
When samana vayu processes food at the navel center, gas can accumulate; naga vayu provides the upward release valve. Practitioners sometimes notice spontaneous burping during seated breathwork or after twisting postures, which is naga vayu doing its work. Gentle seated twists and diaphragmatic breathing support healthy naga function.
Kurma Vayu — The Air of Blinking
Kurma means “tortoise,” an apt name for the upa-prana that controls the opening and closing of the eyelids and the involuntary blink reflex. Just as a tortoise retracts and extends its head, kurma vayu governs the protective movement of the eyes, regulating light entering the body and keeping the cornea lubricated.
Kurma vayu is closely tied to focus and the regulation of sensory input. In practices that involve steady gazing—trataka (candle gazing) or holding a fixed drishti in asana—you are consciously working with kurma vayu, training the eyes to remain steady and the mind to follow. A flickering, restless gaze often mirrors a flickering, restless mind.
Krikara Vayu — The Air of Hunger, Thirst, and Sneezing
Krikara (sometimes spelled Krikala or Krikala) governs the sensations of hunger and thirst, as well as the sneeze reflex and coughing. It acts as a kind of gatekeeper for the respiratory and upper digestive passages, clearing irritants from the nose and throat and signaling the body’s need for nourishment and hydration.
Because krikara vayu manages hunger cues, it works in close partnership with samana vayu, which handles the digestion of what hunger brings in. A balanced krikara vayu produces clear, appropriate hunger signals; an imbalanced one may manifest as constant cravings or, conversely, a suppressed appetite. Mindful eating, regular meal rhythms, and clearing the nasal passages through practices like jala neti all support krikara vayu.
Devadatta Vayu — The Air of Yawning
Devadatta means “given by God” and governs yawning and the deep involuntary intake of breath that accompanies it. Yawning floods the system with oxygen and helps release fatigue, drowsiness, and accumulated tension, effectively “resetting” the nervous system when energy is low.
Devadatta vayu is the body’s built-in mechanism for combating sluggishness, or tamas. A spontaneous yawn during a long meditation or restorative practice is not necessarily a sign of boredom—it is often devadatta vayu replenishing oxygen and signaling a shift toward relaxation. Rather than suppressing yawns in practice, allow them; they are a natural pranic release.
Dhananjaya Vayu — The Air That Remains
Dhananjaya means “conqueror of wealth” and is the most subtle and intriguing of the upa-pranas. It pervades the entire body, governs the opening and closing of the heart valves, and is responsible for nourishing the body and decomposing it after death. Classical texts state that dhananjaya vayu does not leave the body immediately when life ends—it lingers, completing certain processes.
In the living body, dhananjaya vayu is associated with the lubrication of the joints, the regulation of swelling, and the overall structural integrity of the tissues. Because it is so pervasive and subtle, it is the most difficult upa-prana to perceive directly, but it underlies the body’s capacity to hold its form and recover from strain.
How to Work With the Upa-Pranas in Practice
Unlike the major vayus, you will rarely direct the upa-pranas through dedicated techniques. Instead, you support them by keeping the broader pranic system healthy and by paying attention to the reflexes they govern. Here is a practical sequence to bring awareness to these subtle currents:
- Center with diaphragmatic breathing. Sit tall and take 10 slow belly breaths. This stabilizes the major vayus so the upa-pranas can function without strain.
- Practice trataka for kurma vayu. Gaze softly at a candle flame or fixed point for 1–2 minutes, blinking only when necessary, then close the eyes and hold the after-image. This trains steady eye control.
- Allow natural releases. During practice, do not suppress burps (naga), yawns (devadatta), or the urge to clear the throat (krikara). Treat them as healthy pranic discharges.
- Twist gently for naga vayu. Seated spinal twists encourage the release of trapped digestive gas and stimulate the upward-clearing action of naga.
- Eat and hydrate with awareness for krikara vayu. Notice genuine hunger and thirst signals rather than eating on autopilot, supporting clear appetite regulation.
- Rest in stillness for dhananjaya vayu. Close with several minutes of savasana, allowing the most pervasive and subtle current to restore the tissues and joints.
Why the Upa-Pranas Matter
Studying the upa-pranas refines your map of the subtle body and deepens your appreciation for how completely prana governs human physiology—not only the dramatic functions of breath and circulation, but the small reflexes most of us never think about. This level of detail reflects the precision of yogic anatomy, which sought to account for every movement of life force in the body.
Practically, awareness of the upa-pranas encourages a more accepting, non-suppressive relationship with your body in practice. The yawn, the burp, the blink, and the sneeze are not interruptions to be controlled—they are intelligent pranic processes maintaining balance. Honoring them is part of honoring the whole intelligence of the breath and body.Frequently Asked Questions
How many upa-pranas are there?
There are five upa-pranas: Naga, Kurma, Krikara, Devadatta, and Dhananjaya. They complement the five major vayus, giving ten pranic currents in total.
Are the upa-pranas the same as the five vayus?
No. The five major vayus (prana, apana, samana, udana, and vyana) govern core functions like breathing, elimination, and circulation. The upa-pranas are secondary currents that handle specific reflexes such as belching, blinking, hunger, yawning, and tissue maintenance.
Can you control the upa-pranas directly?
Generally no—they operate as involuntary reflexes. You support them indirectly by keeping the major vayus balanced through pranayama, mindful eating, steady gazing practices, and adequate rest.
The upa-pranas remind us that yoga’s view of the body is extraordinarily detailed: every reflex, however small, is an expression of prana at work. As you continue to refine your practice, let these subtle currents flow freely—and notice the quiet intelligence behind even a simple yawn.
