I just went out and shoveled snow without a cap, NOT, I repeat , NOT a good idea.
Odd thing is I came in took my coat off and my shirt was damp from sweat.
I have a Snowmobile racing book and it shows one of the pro-team pit leaders without a hat and short hair; he looked like he had to be hurting.
The caption said he NEVER wore a cap, even below zero in the wind and he never got frost bitten ears.
I ain't that tough.
It is now -20 and for what it is worth, this is the lowest daytime temp. I have ever seen with the temps. still dropping.