Just keep awareness up lah, Last time when I see educational channel they got report that some casino purposely lower the oxygen content in the casino air because it can create diziness and make the gambler do irrational decision.

Like even they know that it bad they still go for it because they like in "drug like " state that cloud their attention and hamper thier brain in a way or another.

Next time if you feel diziness and feel something is wrong in your brain, take regret as an indicator and get out to get fresh oxygen into your brain before making the nest decision.