The answer to this question is life expectancy.
cocaine addicts process less glucose.
Okay, this is an interesting one but mainly no, most activity's will so you don't push yourself but if you really wanted to you could go for however long you want as long as you are not doing harm to your body, depending if you are on a fitness program there will be limits.
Yes, that is 100% true that the<span> regular heavy drinkers usually have to drink more and more in order to have the same effect.
The reason is that when they drink regularly, their brain gets used to the alcohol and it doesn't have any effect at that certain amount which they intake. So when they feel that taking that much amount of alcohol does feel them good, they drink more and more and there comes a stage when alcohol doesn't have any effect on them.</span>
