system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 why we should wash our hands with comfortably warm water. Isn't that the ideal temperature for germs and bacteria to grow/multiply?
gpt
It is, but we're not really worried about bacterial growth *while* we wash our hands. We're not even usually worried about bacteria *growing* on our hands at all— the danger is that we'll transfer germs, via our hands, to a new place (inside out bodies, on our food, etc) where they can grow out of control.

Meanwhile, warm water makes soap more effective at removing germs from our hands, interrupting their movement before they can reach places they'll be dangerous.