Yer.. but I never had that problem to be honest. I remember once I was walking around a sheep paddock at a friend's farm. Up and down hills for an hour or two. Everyone else was all puffed out, I was not.. and this was when I was still a pack a day smoker.. haha.. it's certainly better than it was though and especially noticeable when I have a cold/flu as the symptons that relate to breathing are less.
