Med dopers-wierd physiological condition

I have noticed a wierd physiological condition i have for a while now and want to know what someone else thinks…

It’s basically this: often when i get hot or when i am doing some constant psychical activity(playing basketball) my nose gets runny. Sweating, fine-but starting to get a runny nose…it doesn’t make any sense to me. Sometimes i’ll just be moving around the house and it happens. It’s not that i am sick or have a cold-most of the time i feel fine.

Does anyone think this could be a real problem?