This is a serious question despite the title.
I've recently got back from my middle of nowhere (Hebrides) very active holiday (thanks everyone for your advice/PMs on coping with this). My consultant put my Pred up high before going and whilst there to cover me and despite all the activities, I had very few problems with my asthma - one bad day I couldn't join in a walk and I had the Pred grumps (bad combo!) - but I surprisingly managed days of cycling and out on the boats. I have the photographic proof so I know it wasn't a dream!
However, two days back in London, off the high dose Pred, my cough is back, tight chest, I'm struggling to climb the stairs again and walking to/from the shops leaves my breathless (I've got GP and cons. appts. to keep an eye on things).
So is it not having the high dose Pred now or could it really be something about London that causes the problems? If so, what? I've always thought exercise, cold air and pollen were my main triggers but I have had lots of each of these on holiday but fewer problems, hence I'm confused now.