Not really Pete, I think we're all over the place and we can only guess how much nicotine we need.
Many of us seem to think that we crave nicotine when it could be something else. Have a look at this and see how few people reckon nicotine is what keeps them away from tobacco - http://www.e-cigarette-forum.com/forum/general-e-smoking-discussion/3933-cutting-down-tobacco.html
Many of us seem to think that we crave nicotine when it could be something else. Have a look at this and see how few people reckon nicotine is what keeps them away from tobacco - http://www.e-cigarette-forum.com/forum/general-e-smoking-discussion/3933-cutting-down-tobacco.html