Let’s frame this in a very understandable way:
We will say someone that is a heavy drinker goes to a bar where there is a pool table and a pinball machine. That person plays those games, which require skill, reflexes and brain power, only while they are intoxicated. Can it get to the point where they can perform those skills better while they are intoxicated than when they are sober? In other words, if you take them to the same games while they are stone sober will their performance be sub-standard to what they can do while intoxicated? Will their physiology adapt itself to perform tasks better under the intoxicated state?