I'm all happy today. When I was smoking 2 PAD, I would get winded just walking up stairs (20 years of smoking was rough on me). Today, I went out to one of our state parks and went hiking over rough terrain for almost 4 hours. Yes, I got winded at points, but I made it through. I would have never attempted this hike when I was smoking, I would have been winded after the first 50 feet (steep uphill, lol). vaping has changed my life for the better and I can't wait until I am able to run a marathon (my 5 year goal).