So I'm just getting into the whole vaping thing. I've been a half pack a day smoke for a long time. Used to be a 2 pack a day smoker. Very excited about vaping, and very excited about the community. I do have a concern, though. So at the moment, I'm using a Volt with the prefilled cartomizers it came with while I wait for my new kGo to arrive in the mail. I've noticed it's making me feel light-headed. Not in the same way as smoking too many cigarettes, though. No stomach nausea at all. Just light-headed. Any idea what could be the cause?