Originally Posted by
DJConspicious
How many commuters here have asthma? I have had it since I was born (blamed on my mom for smoking when she was pregnant with me).
I have fairly light exercise-induced asthma. Generally kicks in if I do something dumb like sprints before warming up. Generally worse in cold weather.
If yours is also worse in the cold - like many people's asthma - you might benefit from a balaclava if you're not already using one. I saw a well-done study (can't remember where or I'd cite it) that showed that it's not cold weather that inflames asthma - it's the dry air that generally associates with cold weather. Using a balaclava traps a layer of moist, warm air near your nose/mouth, which should help a lot.
Good luck!