I may be a little late to the party, but I just watched the 2015 biographical adventure film Everest. If you haven’t done so yet, you may consider arming yourself with a cup of hot chocolate and a portable oxygen canister.
Oh, and mittens.
The movie details (don’t worry, no spoilers here) the challenges that climbers face when they’re near or at 29,000 feet. By the way, that’s about what commercial jets fly at when you hop a flight to visit Granny at Christmas.
Getting enough oxygen to breathe at this level is a challenge. Breathing is tough, decisions can be questionable as the limits of physical endurance take their toll on one’s ability to think clearly.
For some asthmatics and other suffers of seasonal allergies, the challenge to breathe and think when suffering looms so large can be just as real as what Everest climbers face.
Be prepared with your tools and with the best information about your environment that you can get. Pollen counts matter, work to understand them so you can breathe easy.