Research the word VALSALVA. When some people excercise....like a bench press, they have a tendency to hold their breath. This raises the pressure in the lungs throat and probably middle ears...also BP a lot.
Have him try to breathe OUT with every exertion. At first it seems counterintuitive but it's the right way to go. I KNOW it's the right way, and I still usually find myself doing it wrong
For the next run have him take 25 mg. pseudoephedrine (generic for Sudafed) about an hour beforehand and see what the effect is. It's a light decongestant. He could always be on the brink of a clogged ear and the slightest thing trigger it.
The Sudafed will open the passages a bit. Sometimes hot tea will do the same.
(Not saying do it regularly, but it might point to a diagnosis...don't do it with very high BP)
[This message has been edited by zip2play (edited 10-22-2003).]