I am become sweat

Here's the scene: it's 65 degrees outside. I'm dressed in shorts and a t-shirt carrying my backpack. I come in from outside and I'm sweating. Not profusely, but noticeably. Some people have a hard time understanding why I'm so sweaty when it's so cool outside. The answer is quite simple:

  1. I'm fat,
  2. I just walked at a brisk pace for 7-13 minutes (depending on circumstances), and
  3. it takes about 20 minutes for my body to acclimate once activity stops.

Frankly I don't see the mystery. "I was just outside and I'm not sweaty at all!" Well, mazel tov. Good on ya, mate. Now hand me a towel, okay?