The cough has gone now, but it took three weeks. I read somewhere it wasn't a good idea to exercise while suffering from a cold, because your body is already under stress. However, I wonder how true that is. At the first stage of a cold, you might be sneezing, a sore throat, shivers, etc. I would not suggest exercise while suffering from all that. Then if you are unlucky, it gets on your lungs and you're coughing up greenies for the next three weeks, but otherwise you don't feel too bad. I wonder whether exercising in that state does any harm. It would probably cause a fit of coughing when you stop, but otherwise...