I quit smoking after 42 years of them a little over 6 months ago. Landmark event for me. My ability to quit I owe to vaping...thank God for that crutch. Maybe I have other issues going on, but I could swear that more I vape the shorter my wind becomes. I figure no sense going to the doctors because most of them are thumbs down on vaping, but would like to know if others have experienced this. I'm on 3mg nicotine 50/50 juice @ 10.5 - 11.5 watts. I am a chain vaper, if you see me, you see me with my mod and atty. Any feed back?