I was a smoker for 40 yrs. I started using an ecig in Oct.of 2012. now i use a mod. I no longer smoke regular cigarettes. I switched from smoking to Vaping right off the bat. The changes are obvious,no more coughing in the morning,don’t smell like an ashtray,i can go anywhere now days and don’t have to worry about going outside to have a smoke anymore,i can breathe a lot better.