i smoked from age 14 to 25. I'm 25 now. started vaping in 08. been around 7 years on-and-off vaping. i still do get short of breath when vaping. especially in the mornings. something about lying vertically for long periods of time, maybe? or maybe, when asleep, our lungs stop taking in large amounts of air, which allows phlegm to coagulate in the airways? IDK! mornings do it, for me. As far as loss of breath from vaping- Yes, as I've said above, I have experienced this, in the mornings, and, i think it's normal. it's remnants of our smoking days. It's bound to go away, but it does take time. I remember that when I have not smoked in 5, 6, 7+ months, only vaping, the wheezing and the coughing, the phlegm, the shortness of breath, they all sort-of slip away without you really noticing it. But, it does take a while. Eventually you become so used-to your new breath abilities, you forget your inabilities ever existed. It can take a long time though... I have switched between smoking and vaping many times, and, in my experience, it takes a lot longer for my lungs to "heal" once i've switched to vaping again, than the much shorter amount of time it takes for my lungs to decrease capacity and begin coughing/hacking/producing phlegm/etc when i begin smoking again. IE: It takes 6-7mo to notice improvement, but as soon as I go back to smoking, it only takes a week or so before I begin noticing decreases in breath, phlegm, the whole works... But, there is hope. just keep on vaping on and you'll notice big improvements when looking back, in a year or so... Well, NOT noticing the hacking/shortness of breath is more like it... U won't notice the slow transformation at all, haha, but you'll see the difference eventually. Keep it up and enjoy your vape journey!