Mood rings. Do they work?

My mom got this mood ring
Usually I get
Blue:relaxed, at ease, calm, loveable, content

But today I got

Dark blue: very happy, in love, passionate, romantic

How do these things work

My dad got purple which isn’t on the chart

They’re just temperature sensitive.
Blue = warm
Black= cold
Green = medium
Think purple = very warm.

They were real popular back in the late seventies, everyone in school had to have one.


Oh the seventies …where everything was so groooovy

The technology was originally meant to be a biofeedback device to help people monitor their moods, but it was found to be ineffective. Now, they’re just a novelty.

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