Note
My intent was to do some exercises before bedtime. But I went to a movie in Somerville, and when I got home close to midnight, it was 7 F outside. That's no big deal, but I remembered that I had set the thermostat to 58 since I was away for a couple of days. 58 is a little on the cool side, but when I stepped into the house, something seemed wrong. I checked the thermostat, and was set to 58, but the temperature was 43. Bumped it up and the furnace immediately came on. (That happened once before, and all signs point to a sticky relay in the thermostat, very easy to replace the unit.) Only 35 F in my bedroom, so I pulled out the down mummy bag and hit the hay without doing anything else. By 5:30 AM, it had finally gotten up to 58.