Pranayama for Cooling the Body: Sheetali and Sheetkari

Two names, one intention

Sheetali and sheetkari sit together in the classical hatha texts as a matched pair, both drawing on the Sanskrit root sheeta, meaning cold. They are taught side by side in the Hatha Yoga Pradipika and the Gheranda Samhita as ways of drawing breath in through the mouth across a wet surface of tongue or saliva, then releasing it slowly through the nose. The texts describe the resulting sensation as cooling, and pair that word with a fairly generous list of traditional benefits — settling excess heat, easing thirst, calming an agitated mind. This page keeps to the part of that claim that is easy to check for yourself: what the sensation actually feels like, and to whom.

Sheetali: the rolled tongue

Sheetali asks you to stick the tongue out slightly beyond the lips and curl its edges upward and inward, so that it folds into a tube or trough shape — picture a leaf rolled lengthwise. Inhale slowly through that tube. Air moving across a wet tongue surface, especially one curled to concentrate the airflow down its centre, produces a distinct sensation of coolness on contact, similar to blowing across a wet fingertip. Once the inhale is complete, close the mouth and exhale slowly and quietly through the nose. That's the whole cycle: mouth-inhale through the rolled tongue, nose-exhale.

The tricky part of sheetali has nothing to do with breath control and everything to do with anatomy. The ability to roll the tongue into a tube depends on the structure of the tongue's intrinsic muscles, and a meaningful proportion of people simply cannot do it no matter how much they practice, in the same way some people cannot wiggle their ears. If you've tried and it does not happen, that is not a failure of technique — it is worth stopping there rather than straining the jaw or tongue trying to force a shape your anatomy doesn't make.

Sheetkari: the alternative that isn't a downgrade

This is exactly why the classical texts do not stop at sheetali. Sheetkari is described immediately alongside it as a full alternative, not a lesser backup. For sheetkari, keep the tongue flat and resting behind the closed teeth, part the lips slightly, and draw breath in through the gaps between the clenched teeth. This produces a soft hissing sound (the name sheetkari is often translated as "the hissing one") along with a similar cooling sensation across the tongue and inner mouth, since air is still passing over a moist surface before it reaches the throat. As with sheetali, the exhale that follows is slow and through the nose, mouth closed.

Because sheetkari doesn't depend on tongue-rolling ability, it is the more universally accessible of the two, and there's no traditional or practical reason to treat it as second-best. Some teachers suggest trying sheetkari with lips very slightly parted rather than wide open, since a wide-open mouth dries out quickly and can feel harsh on the throat during longer practice; a narrow gap between the teeth keeps the air passing over more wet surface, which is where the cooling sensation comes from in both techniques.

When people actually reach for these

In practice, these two techniques tend to show up in two settings: hot weather, and the end of a heating or vigorous physical practice. A few rounds of sheetali or sheetkari on a hot afternoon, or after bhastrika or an active asana sequence when the face feels flushed and the mouth is dry, can feel like a genuine relief — a small, immediate, sensory shift toward calmer and less flushed. This is different from claiming the technique lowers your temperature in any measurable sense; it is closer to what a cool washcloth on the back of the neck does, a local sensory input that reads as cooling and that most people find pleasant and settling, whatever is or isn't happening at the level of core temperature.

It's worth being specific about dose here, since more is not obviously better with either technique. Somewhere between eight and twelve slow rounds is a reasonable session length; beyond that, the mouth tends to dry out uncomfortably, and dry-mouth irritation is not the same thing as a cooling effect — if your mouth feels parched and scratchy rather than pleasantly cool, that's a sign to stop, not to continue.

What "cooling" honestly means here

The classical texts were written in a context, and a climate, where cooling and heating language described lived, felt experience rather than a measured physiological claim, and that traditional vocabulary is worth taking on its own terms rather than either dismissing it or overselling it as science. What can be said honestly: the sensation of coolness on the tongue and in the mouth from air moving across a wet, exposed surface is real, immediate, and easy to notice for yourself in a single round. What cannot be honestly said: that a few minutes of sheetali or sheetkari produces a meaningful, measured drop in core body temperature. The research on this specific question is thin — a handful of small studies exist and results are mixed and modest at best — so the fair summary is that any core-temperature effect, if it exists at all, is small, and the more dependable and better-documented part of the experience is the local, sensory cooling in the mouth and the calming effect of slow, quiet breathing generally.

This distinction matters most in a real heat emergency. If someone is showing signs of heat exhaustion or heatstroke — heavy sweating alongside cold clammy skin, or conversely hot dry skin with confusion, nausea, a rapid pulse, or fainting — the correct response is to get them into shade or air conditioning, give them water if they're alert enough to drink safely, remove excess clothing, and cool the skin with water or ice packs, calling for emergency medical help for anything beyond mild symptoms. A breathing exercise is not an appropriate substitute for any of that, and this page does not suggest otherwise.

Working these into a regular practice

Both techniques are easiest to learn seated, spine upright but not rigid, in a quiet moment rather than in the middle of feeling overheated for the first time. Learning the mouth and tongue shape calmly, a few rounds a day for a week, makes it far easier to reach for either technique naturally when you're actually hot, flushed after practice, or simply want a short settling break in the middle of a warm afternoon.