Lactic
I suspect there is also that aspect. I’m quite conscious of this, and would be quite happy with that diagnosis.
A bit of background:
The effect is most keenly felt when exercising at a reasonable level. I had a bad, bronchial cough over the winter, which would see my doubled up coughing as I was riding. Gradually, this has got better, but any exercise of noticeable intensity results in heavy coughing. After last night (club TT), I was coughing hard for the following hour, and my chest still has some residual tightness now.
Historically, I understood (from the family doc) as a child that I was close to having asthma (quite what that meant, I don’t really know. though I have suffered whooping cough during childhood and with more than one bout of croup.
Additionally, some things cause a varying degree of (always mild) allergic reaction. These include orange squash (and worse, barley water), perfume, alcohol (bottled lager specifically – this is a weird one). The reaction is to become “wheezy”.
In spite of being a sportsman all my life, I’ve noticed that, after three winters of chest infections/hard, bronchial coughs, the effect of this on my exercise has increased. Hence, coming to the conclusion that it might be exercise induced asthma.