Breathing

The Second Doctor claimed that treachery was as natural as breathing to the Androgums and, in an attempt to anger Group Marshal Stike, the Sontarans. (TV: The Two Doctors)

A video of George Floyd's death showed him pleading to breathe and for his mother. (PROSE: 8.46)

The Clockwork Droids detected organic lifeforms through their breathing. (TV: Deep Breath)

When Clara Oswald was extracted and time looped, she no longer had to breath but kept doing so out of habit. (TV: Hell Bent)