Maybe you should get some pants!
I've been curious for awhile now about whether anyone else runs warmer as they age, but it doesn't seem to be the case. 'Course I'm not 50 yet, but keep running, particularly sleeping, hotter and hotter over the last several years, even noticeably more so in the past few months.
That's saying a lot, considering I was much warmer than average to begin with. People would probably have a hard time believing how little insulation I need for a given temp, it's such a huge difference from "normal".
But I see you guys that wear shorts in cold weather, some even wearing a puffy while hiking in shorts, and don't see how you do it. They don't have to be thick pants, but even when just wearing a t-shirt up top at 40F...I gotta have pants!
18 days of total solitude is just plain awesome.