Shock works… at least for like 10 minutes anyway. I can go out during winter in light clothes just fine like that, but I find it easier when it is actually cold, not just a bit cool.
I think it could be the same reason I find it hard to shower with cold water, but far easier to bathe in it when I just get in all at once.

I mean, I usually cook myself, basically, but sometimes there’s suddenly no hot water.