I found myself in a situation this last week that is a unusual for me. Something has set off some chest discomfort and from Wednesday I have been feeling breathless with minimal exersion (having a shower, drying off and dressing) and cardio classes have been a real strain more than the usual. Even from Monday I didnt have the stamina and willpower to finish the class, Wednesday I gave up after 20 mins and I skipped the spin class completely on Friday. I really wondered if I was sickening for something, but it hasn't materialised into anything which is why I havent been to see the doctor. I spoke to the pharmacist and he told me the maintenance inhaler I am on is the strongest dosage of the brand. I can only imagine that it might be a psychological thing. I was telling a friend that every cardio exercise session requires a fair amount of willpower to get through the first 15 - 30 mins until my chest opens up and breathing becomes easier. Even with my normal use of my inhalers as prescribed by my doctor, it just feels too tiring to put my body through it all again this week. I could really do with some advice and reassurance especially from those of you that do regular exercise. should I just 'vasbyt' (an Afrikaans word that means bite hard, dont give up) keep going and it will get better, take it easy until my chest feels more comfortable, which it never really does when doing cardio, but I normally just persevere, or stick to alternative exercises that are less taxing on the lungs?