This was a rough Nordic skiing winter for us. -20F really does require something extra to help the lungs. A buff/balaclava helped a lot, but soaked/frozen fabri

This was a rough Nordic skiing winter for us. -20F really does require something extra to help the lungs. A buff/balaclava helped a lot, but soaked/frozen fabric has its own downsides. I’ve heard the pros routinely develop cold induced asthma.