Brownian motion means molecules inside your body move at ~10000kph (and because it’s random they don’t go anywhere). They’re bouncing around at that speed insid

Brownian motion means molecules inside your body move at ~10000kph (and because it’s random they don’t go anywhere). They’re bouncing around at that speed inside a 30 cubic micrometer ball. At that speed they meet every other molecule. Not just meet, but touch them everywhere, at every angle, in every configuration.