Yawning
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An involuntary deep INHALATION with the MOUTH open, often accompanied by the act of stretching.
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Subject headings from Medical Subject Headings (MeSH) 2026, courtesy of the U.S. National Library of Medicine. ScieBeta is not affiliated with, nor endorsed by, the NLM or the NIH. Resources are linked from their original providers and open directly from them. Licence and credit are shown alongside every item.