I am trying to find reasons to step up my exercise routine. I know that exercise is GREAT for CF and keeps us nice and open. This may be a dumb question, but does exercise actually help us fight infection? For example, if I am in the beginning stages of an exacerbation and I choose to step up the hiking or whatever, could that potentially fight off that infection to the point that I wouldn't need to treat it? vs. if I were to choose not to exercise that week. Does getting O2 and air deep in our lungs actually help KILL some of the bacteria or infection? I know it keeps us open and I know it helps us clear, but are there other benefits? Hope this quetions makes a lick of sense<img src="i/expressions/face-icon-small-smile.gif" border="0">