32 thoughts on “

  1. Because our ancestors would have used our fingers and toes in ways that would have worn them down.

    E.g. climbing trees.

  2. Thanks for the nudge! Done. I don’t get notified for unlisted/quiet public posts, so I didn’t see that one.

  3. Really recommend Chat GPTπŸ€—: Fingernails and toenails keep growing because they’re made of keratin, a protein produced by specialized cells in the nail matrix. These cells constantly divide and push older cells out. As they move out, they harden and form the visible nail.

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