Studies that use cortisol as a biomarker are generally tea leaf reading wankery. Pick a thing, anything, you'll find a cortisol study associates with it.
I picked this out of thin air, and sure enough:
https://www.yahoo.com/entertainment/psychologist-says-people-listen-heavy-095943504.html
mittimithai
npub1qc…smj7f
2025-05-07 22:52:18 UTC
in reply to nevent1q…8q9m
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npub1qcat9yazmhqn49mzakrfalcp6xfzr6t04wgfhtultg60665ckmfs9smj7fSeen on
wss://relay.mostr.pubPublished at
2025-05-07 22:52:18 UTCEvent JSON
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