Quote Originally Posted by Catrin View Post
Now if I could just persuade my sinuses to behave so I don't have to breath with my mouth open
Have you tried nasal strips? They make an amazing difference. When I'm super congested or when I'm running intervals I still have to breathe through my mouth (and I pretty much always have to exhale through my mouth), but for the most part they've opened up a whole new world of nose breathing to me.