Taking coffee and energy drink is not the best option and just like you said it won't still change what the result will be, but as a human being and the money involve is a money that can change life for instance, you will be so eager and curious to see what will be the final result and to some point your mind won't be at ease until the game is over and even when the game will be over if it doesn't go well ( in your favor) your mind won't still be at ease because you will be calculating what you would have used the money for and how rich you would have become.
Coffee and energy drinks, on the contrary, stimulate your nervous system. And in that state, first of all, you definitely won’t be able to fall asleep, that’s obvious. Secondly, you won’t be able to play well, because an overstimulated nervous system will lead to mistakes. And mistakes in gendering* will equal losses. So I have nothing against a cup of coffee in the morning, that’s fine, but if it’s before bedtime, just to stay awake and keep playing, then I’m definitely against it.