I’m running for around 14 years already and I never experienced this. My limit is around -20C, which is probably around -10F. Could be also that if you live in

I’m running for around 14 years already and I never experienced this. My limit is around -20C, which is probably around -10F. Could be also that if you live in an area with harsher winters, somehow you gradually get used to the climate. It does seem weird, because years ago when I tried running with a scarf, it was seen like a bad thing for your health in the running community as all the humidity and whatever else accumulated in the cloth can be bad for you. How things change...