So glad to hear your MD changed you to Advair (be sure to rinse your mouth well or you can get thrush). Anyone w/asthma can enjoy an active outdoor life if certain precautions are taken. Just be sure to bundle up your neck area very well and breathe through your nose, not your mouth. The nasal passages warms the air before it enters the airways where the mouth does not. Cold air causes the airways to constrict and therefore, setting you up for asthma attack. Apparently the MD does not have teens ... my youngest is 19, but thank goodness he's a layed back type ... my daughter (now 24 & family of her own) has red hair and temper to match! Walking relieved my stress and got me away from her and her hormones!
The American Lung Association has some great brochures on cold air.
Good luck, bundle up, and keep walking!
Medical info given is meant for educational purposes & not as medical advise.