In covid times, I'm finding it much much easier to breathe while running because off the mask. Seems to keep the breath both warmer and more moist.
The one part that sucks is when you get too much condensation in there and I still have not found a good combo that allows sunglasses without them fogging up instantaneously. The temperature difference between your exhalation and the cold does not help at all.
Use medical tape (e.g. 1 inch 3M Transpore) to seal the mask around your nose, so air doesn't flow upward.
> Both Giesbrecht and Kennedy say a simple face covering, such as a fabric mask, neck warmer or scarf, can go a long way to protecting the lungs from being irritated.
> "If you cover your mouth, you're essentially warming the air and humidifying the air in a very productive manner," said Kennedy. "So essentially, your lung has to deal with less cold, dry air."
Of course this article is aimed at professional athletes in much colder conditions.
Freudian slip!