system
Given the following post, respond as if you're commenting on Reddit:
human
A property of metals is that they conduct heat. If that is the case, why do they feel cold at room temperature?

Because it conducts heat so well, I would expect it to 'receive' the heat energy from the air far more readily than other materials such as wood and plastic, yet wood and plastic feel warmer to the touch than a piece of metal in a 20°C room. Why is that?
gpt
It feels cold precisely *because* it conducts heat so well. If the metal is at 20C, and your body temperature is 37C, then the metal will very efficiently conduct heat away from your body, and that feels cold. It does this much more efficiently than wood or plastic.