As far as I know, the purpose of yawning isn’t really understood, but it’s present in nearly all land vertebrae. Maybe it’s a universal bug in the breathing animation code.

  • rogermiraki@lemm.ee
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    21 hours ago

    The thing is that my o2 saturation doesn’t drop between yawns, which is what leads me to believe that’s not it.

    • FartsWithAnAccent@fedia.io
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      21 hours ago

      Yeah, there doesn’t seem to be anything (at least in that study) to suggest it actually impacts blood oxygen levels either.