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the claim

Yawning is a reliable sign that a person is tired.

the verdict
CONTESTED PARTIAL
Recorded sources
3 sources for · 1 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Yawning is a reliable sign that a person is tired?

Partly. Some sources associate yawning with drowsiness or sleepiness, while a neurology review notes yawning can also signal numerous other conditions, so the evidence only partly addresses whether yawning reliably indicates tiredness.

Verdict: CONTESTED PARTIAL · 3 sources for, 1 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 3
Yawning and its physiological significance -
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Yawning and its physiological significance - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.4103/2229-516X.112230

Evidence against · 1
Yawning in neurology: a review.
2018
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HAG, T., RP, M., CHF, C., & O, W. (2018). Yawning in neurology: a review.. doi.org. https://doi.org/10.1590/0004-282x20180057

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More for · 2
Yawning Definition & Causes
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Yawning Definition & Causes. (n.d.). my.clevelandclinic.org. https://my.clevelandclinic.org/health/body/yawning

Yawning as Therapy? The Potential of the Conditioned Yawn Reflex as a Novel Treatment for Insomnia Disorder.
2025
Get citation
CA, E. (2025). Yawning as Therapy? The Potential of the Conditioned Yawn Reflex as a Novel Treatment for Insomnia Disorder.. doi.org. https://doi.org/10.1111/jsr.70142

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