Andrew Huberman· PhD
Pupil size. Pupil size is a tell, which is an autonomic function, not a skeletal muscle function, but we have all these skeletal muscles, which we're controlling, which give us away.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
Pupil size. Pupil size is a tell, which is an autonomic function, not a skeletal muscle function, but we have all these skeletal muscles, which we're controlling, which give us away.
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