TIL a cat’s purr is typically between 25Hz and 140Hz. These levels have shown promise in healing bone and joint problems, so much so that the rate of healing for broken bones has shown to increase.

Read more: https://petkeen.com/do-cat-purrs-have-healing-powers/

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  1. ​

    There is [one study](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5243970/) (on rabbits) where a 3mm defect was introduced (via bone saw) to the humorous and 0.3g acceleration at 25-50Hz was introduced with an ST-06 electronic vibration system to the rabbit’s cage shaking their entire body at set frequencies.

    That is not remotely, at all, even tangentially, related to a cat purring at wildly varying frequencies with barely detectable acceleration.

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