This advice comes from a rather strange place, Plymouth Plantation, its a recreation of a 17th century New England village, a living history museum, period dress, period weapons are carried around and fired with blanks, a recreation of a Wampanoag Village with actual Wampanoag as the living history teachers.
I remember being young and with a school group and one of my classmates asked, "is it better to cold or hot."
The man, who was portraying a pilgrim said, "its better to be cold than hot, there are things you can do about it after all."
I was young and at the time I hated the cold, I hated winter, and I wanted to move to phoenix arizona so I would never be cold again. (I am not making any of that up and I like cold weather now, If I was going to move to the southwest I'd move to new mexico where they do get snow, and I do like winter.)
So I remember thinking that the guy was wrong.
Now a couple of things happened, first in the 2011 Halloween Nor'easter a few years back I like many other New Englanders lost power for days, and I had a chest cold that due to the actual cold developed into pneumonia, but we powered through, we had both fireplaces going (the people who built this house had an addition installed where they put another fireplace giving them two, don't ask me why.) and we wore warm clothes and we covered ourselves in as many blankets as possible, we were out of power for four days and it took the goddamn electric company five minutes to fix it, the only reason we got it restored after four days instead of like seven was because a neighbor flagged down a passing national grid van and asked them what was going on, five minutes later we had power. It turns out they had to do something to one of the boxes nearby. i've lost power during a snowstorm, Most New Englanders have but the whole pneumonia thing makes this one stick out to me.
Now when the people affected by hurricane Irma people didn't have the ability to cool down, they just had to suffer through it, when we could put on heavy clothes and light a fire and I don't know why but I thought of that time in Plymouth plantation, of that school trip, and I realize, the guy was right.