How can I mow the lawn with allergies?

I have allergies, and I know, mowing the lawn is not an ideal thing to be doing. But I want to do it, I enjoy cutting the gr and being outside... plus there is the exercise benefits. However, I have come down with Hayfever and I've used Allegra and Reactine with no real help. I want to do everything I want outside without worrying about getting sick again. I'm going to my doctor this afternoon, so if you have any prescription suggestions... let me know of that too.