I have been vaping e cigarettes from last 8 months. Earlier, I was a smoker and I used to smoke tobacco cigarettes. After switching to e cigarette there is was improvement in my sleep. In the starting days I have an urge to smoke regular cigarette, but soon I was able to reduce the smoking habit and now it has been 6 months time I have not done smoking. I only use to vape e cigarettes and I have tried different flavours of e cigarette from Ecigarettesworld. I mostly use the tobacco flavour and with e cigarettes you need not to light them up with flame as they are battery operated device. I use e cigarettes in my car too.