Cool down; I'm guessing Marlin was thinking of when you've gotten over heated and sweaty from some hard work and then stopped. Your body stops putting out the heat and the sweaty layers keep transfering heat out. Just what sweating was trying to do when it started.

Aim to stay comfortably cool by taking the time to adjust your layers as you go. IMHO

Marlin can correct me if I'm wrong about the "cool down".

He's probably studying db's link too, right Marlin? ;)