As temperatures climb, your yoga practice doesn’t have to leave you overheated and drained. Ancient yogic texts describe a category of pranayama techniques specifically designed to cool the body, calm the mind, and reduce internal heat — a concept Ayurveda calls excess pitta. Two of the most effective are Sheetali (the cooling breath) and Sitkari (the hissing breath), both of which lower body temperature, reduce blood pressure, and soothe the nervous system within minutes.
In this guide, you’ll learn the technique, science, and practical applications of cooling breathwork so you can stay comfortable and centered through the hottest months of the year.
The Science Behind Cooling Breathwork
Cooling pranayama works through a mechanism called evaporative cooling combined with parasympathetic activation. When you draw air across the moist surface of your tongue (Sheetali) or through your teeth (Sitkari), the evaporation absorbs heat from the blood vessels in the oral mucosa, effectively cooling the blood before it circulates through the body. This is similar to how panting works in dogs, but controlled and deliberate.
Beyond the direct temperature effect, the slow, rhythmic breathing pattern activates the vagus nerve and shifts the autonomic nervous system toward parasympathetic dominance. This reduces heart rate, lowers blood pressure, and decreases cortisol — making cooling breathwork not just a physical coolant but a powerful tool for mental composure. A 2019 study in the International Journal of Yoga found that Sheetali pranayama practiced for just 10 minutes reduced both oral temperature and systolic blood pressure significantly in healthy adults. If you already practice pranayama for anxiety, adding cooling techniques creates a comprehensive breathwork toolkit that addresses both heat and stress.
Sheetali Pranayama: The Cooling Breath
Sheetali is the primary cooling breath in the yogic tradition. The word comes from the Sanskrit root “sheetal,” meaning cool or soothing.
How to Practice Sheetali
Sit in any comfortable position with a tall spine — cross-legged on the floor, in a chair, or even standing. Close your eyes and take a few natural breaths to settle. Then curl your tongue into a tube shape by rolling the outer edges upward (like a straw). Extend the tip of your curled tongue slightly past your lips. Inhale slowly and deeply through this tongue-tube, drawing cool air across the moist surface of your tongue. You should feel a distinct cooling sensation on the tongue and the roof of the mouth. At the top of the inhale, draw your tongue back in, close your mouth, and exhale slowly and completely through both nostrils.
Start with 8 to 10 rounds and gradually build to 15 to 20 rounds per session. Each inhale should last about four to six seconds, and each exhale should match or slightly exceed the inhale length. Practice with your eyes closed and attention focused on the cooling sensation — this sensory focus deepens the calming effect.
Important Note on Tongue Curling
The ability to curl the tongue into a tube is genetically determined — roughly 65 to 80 percent of people can do it, but the rest physically cannot. If you’re in the group that can’t curl your tongue, don’t force it. Sitkari (described below) provides the same cooling benefits through a different mouth position and is the traditional alternative for non-tongue-curlers.
Sitkari Pranayama: The Hissing Breath
Sitkari offers the same cooling effect as Sheetali but through the teeth rather than a curled tongue, making it accessible to everyone.
How to Practice Sitkari
Sit comfortably with your spine tall. Bring your upper and lower teeth together gently (not clenching) and part your lips to expose your teeth. Inhale slowly through the gaps between your teeth, drawing air across the moist inner surfaces of your cheeks and gums. You’ll hear a soft hissing sound — this is where the name Sitkari comes from (the Sanskrit word for “hissing”). The cool air passing over the wet oral surfaces produces the same evaporative cooling as Sheetali. At the top of your inhale, close your mouth and exhale slowly through both nostrils.
Practice 8 to 15 rounds, matching your inhale and exhale lengths. If you have sensitive teeth, the cool air passing over them can cause discomfort — in that case, try placing the tip of your tongue lightly against the back of your top teeth to redirect the airflow over the tongue surface instead.
When and How to Use Cooling Breathwork
Cooling pranayama is remarkably versatile. Here are the most effective ways to incorporate it into your life during the warmer months.
Before and After Hot Yoga or Outdoor Practice
If you practice heated yoga styles like Bikram or hot vinyasa, five minutes of Sheetali or Sitkari before class can pre-cool your system, and five minutes afterward helps bring your core temperature back to baseline faster. The same applies to any outdoor asana practice in summer — cooling breathwork bookends prevent the overheating that leads to fatigue, headaches, and irritability.
Midday Heat Management
When the afternoon heat peaks and you don’t have access to air conditioning (or simply want to reduce your reliance on it), three to five minutes of cooling breathwork can drop your perceived temperature and increase your comfort. It’s particularly useful for outdoor workers, athletes, and anyone who spends time in warm environments. Combine it with a few minutes of Yoga Nidra for a complete midday reset.
Calming Anger and Frustration
In Ayurvedic philosophy, anger and irritability are expressions of excess pitta (heat) in the mind. Whether or not you subscribe to that framework, the physiological reality is that anger activates the sympathetic nervous system and literally raises body temperature. Cooling breathwork addresses this on both levels — reducing physical heat while engaging the parasympathetic brake. Next time you feel frustration rising, try ten rounds of Sheetali before responding.
Summer Insomnia
Heat is one of the leading causes of poor sleep in summer. Your body needs to drop its core temperature by about one degree to initiate sleep, and warm environments fight against this process. Practicing 15 to 20 rounds of cooling breathwork in bed, immediately before sleep, can help bridge this gap. Our Yoga Nidra for sleep guide includes a full protocol for combining breathwork with guided relaxation for maximum sleep benefits.
Cooling Breathwork and Ayurveda
Ayurveda — yoga’s sister science of health and lifestyle — organizes the year into seasons governed by the three doshas. Summer is pitta season, characterized by heat, intensity, and sharpness. When pitta accumulates in excess, it manifests as inflammation, skin irritation, acid reflux, irritability, and an overly critical mind. Cooling pranayama is one of the primary Ayurvedic remedies for summer pitta imbalance.
If you’d like to explore the broader intersection of Ayurveda and seasonal yoga practice, our article on spring yoga and Ayurveda covers the kapha-to-pitta transition that happens in April and May, offering a natural complement to the summer-focused practices in this guide.
A Complete 10-Minute Cooling Breathwork Session
Use this protocol whenever you need to cool down, calm down, or both.
Minutes 1-2 — Settle: Sit comfortably, close your eyes, and take ten slow, natural breaths through the nose. With each exhale, consciously release tension from your jaw, shoulders, and hands. Set an intention to cool and calm.
Minutes 3-6 — Sheetali or Sitkari: Practice 15 rounds of your chosen technique. Inhale for a count of five through the curled tongue (Sheetali) or teeth (Sitkari), and exhale for a count of six through the nose. Focus your attention entirely on the cooling sensation. If your mind wanders, gently return to the physical sensation of cool air entering your mouth.
Minutes 7-8 — Extended Exhale: Return to nostril breathing but maintain an extended exhale ratio (inhale for four, exhale for eight). This deepens the parasympathetic response initiated by the cooling breaths. Practice eight to ten rounds.Minutes 9-10 — Rest: Release all breath control and sit quietly, observing the aftereffects of the practice. Notice the temperature of the air in your nostrils, the sensation in your chest, and the quality of your thoughts. This integration period is essential — it’s where the nervous system consolidates the shift from sympathetic to parasympathetic tone.
Precautions and Contraindications
Cooling breathwork is safe for most people, but there are some situations where caution is warranted. Avoid Sheetali and Sitkari during cold weather or if you have a cold, cough, or respiratory congestion — the cool air can irritate already inflamed airways. People with very low blood pressure should practice gently, as these techniques can lower blood pressure further. If you have asthma, start with just three to five rounds and observe your response before increasing.
Cooling pranayama is not recommended immediately before vigorous physical activity, as the parasympathetic activation can reduce your readiness for intense exertion. Save it for after your workout, or use energizing techniques like Kapalabhati before exercise and cooling techniques afterward.
With consistent practice through the summer months, you’ll develop a tangible ability to regulate your internal temperature and emotional state using nothing but your breath. It’s one of yoga’s most practical and immediately rewarding skills — and once you experience it working, you’ll wonder how you ever survived a summer without it.
