Credit: Biswarup Ganguly. In a clinic in Jaipur, a low, resonant note from a conch shell echoed through the room—and it’s all for an unlikely therapy. Researchers in India say shankh blowing—an ancient yogic practice of exhaling forcefully into a spiral-shaped conch—may help people with obstructive sleep apnea (OSA), a disorder that causes repeated pauses in breathing during sleep. In …
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