no it isn't
Under the influence of what? If you mean under the influence of alcohol then the answer is no, you can't drive while drunk.
Electronic cigs or oral substitute.
First of all, a lot of drugs are illegal anyway. So it´s illegal to smoke pot period, illegal to dive while smoking pot, illegal to drive while smoking pot, it doesn´t matter, it´s just illegal to be on illegal drugs. Drugs that are legal have warnings on them, such as don´t drive while on this drug, and the reason is that it is dangerous. If the drug impairs any of your functions, you are not supposed to drive while under their influence. While there aren´t any specific laws about diving while under their influence, it could also be potentially dangerous. If you are too high to notice that the water is too shallow, or if your functins are impaired to the point where you can´t climb up to dive, then it is not recommendable. So if the drug is legal, there are no specific laws about diving, however, it may be a stupid thing to do.
no
never
You can indeed get into shape while smoking. You can not get healthy or achieve fitness easily while smoking though.
The effects of smoking and drinking are the same with and without hte IUD.
its a bit hard not to smoke while smoking
No, and don't drive while intoxicated.
Smoking in a private vehicle is not illegal unless it causes you to drive without due care and attention. From October 2015, it will be illegal to smoke in a vehicle when there are children present. It is illegal to smoke in commercial vehicles, except for lorries.
No smoking in workplaces, bars, restaurants, hospitals, etc. No smoking in NYC parks, beaches and boardwalks. No smoking on public buses, in taxis, on subway trains, subway platforms, subway stations, subway staircases, even when it is outside. No smoking while pumping self-serve gasoline. No smoking under the age of 16.