When your jaw, face, or shoulders are clenched, before a presentation, or any time you want to shake off tension and self-consciousness with something a little playful.
The wide open-mouthed exhale and the exaggerated stretch of the tongue and face release tension held in the jaw, throat, and cheeks, areas that quietly tighten under stress. The forceful, sigh-like exhale also lengthens the out-breath, which leans on the calming, parasympathetic side of the breath. And doing something deliberately silly can interrupt a stress loop and loosen social tension, so the benefit is as much about release as any specific physiological switch.
There is little formal research on Lion's Breath by name. Its value is best understood through two well-supported ideas: long, complete exhalations tend to calm the nervous system, and consciously stretching and releasing facial and jaw muscles eases held tension. Consider it a low-risk, feel-good reset rather than a studied intervention.
Lion's Breath comes from Simhasana, the 'lion pose' of Hatha yoga described in classical texts, in which the practitioner mimics a roaring lion, tongue out, eyes wide, gaze lifted. It has traditionally been said to relieve tension and, in some lineages, to benefit the throat and voice.
Start with two or three rounds seated. Add the full Simhasana pose (kneeling, hands pressing the knees with fingers splayed) as you grow comfortable. Use it as a lively punctuation mark between longer, calmer practices rather than a standalone session.
Do I have to stick my tongue out?
It's the signature of the pose and it helps release the jaw and throat, but a strong open-mouthed exhale still helps if you'd rather keep the tongue in.
Won't I look silly?
A little, and that's part of the point. It's a quick way to loosen up and let go of self-consciousness. Do it privately if you prefer.
Safety
Breathwork is a complement to (not a replacement for) professional medical care. If you have a heart, respiratory, or blood-pressure condition, are pregnant, or feel unwell, check with a clinician before practising breath-hold techniques.