@Gone Digital - Yes, it is not unheard of to have sleep problems from smoking high nic juices right before bed. Tell your bud to switch to a lower nic level an hour or more before he's winding down to sleep. I had this problem when I started mixing my own liquids- I had the blend wrong and was smoking too much nic, didn't sleep well for 3 days before I sussed out the problem.
@OP- I feel like a fiend comparatively, lol. I have smoked up to 15ml/day. Average is 7ml. I am a constant vaper and using old 510 atty's so there's a bit lost to leakage, but meh. I like my system. I just smoke constantly. I did when I was an analog smoker too, so no change there. Just MUCH more healthy.
For the first few weeks after every time I switched to vaping I would feel icky, clogged, bogged down. I even thought some of the liquids were making me sick- they weren't. It is the body reacting to the LACK of the several dozen other toxins in analogs. Every body WILL experience a portion of the same effect as quitting altogether. White blood cell count drops a bit, immunity is decreased a bit, but it goes away fairly quickly. Then the most amazing thing happens- You start to feel BETTER. My lungs cramped from how much I smoked a day, and weeks after switching I started to notice the ache fade. Years later I am STILL coughing up bits of tar and yuck from my smoking days but I can run without gasping for air, swim without suffering, and I feel like I am finally healing from all the self inflicted damage.
Oh, and First Post! (Been reading these forums for a few years now, haha... figured it's finally time to join!)