Funny thing about coffee is the caffeine. Like most other drugs (in this case a naturally occurring chemical stimulant) is that the more you have the more you will need and it is addictive.
I find that energy drinks give you a bit more of a blip because of the sugar surge they also provide but I have always found their effect rather short lived and they tend to leave me feeling a bit jaded afterwards.
Now, I take my coffee black, I have a 1 mug plunger. 1 for home, 1 for work. I take supplies with me because instant coffee is disgusting.
The trick for me is, to drink as little coffee as I can. I very rarely drink more than 1 per day. The idea is, by drinking less or none, you make the body more sensitive to itās effects⦠so you get a better effect.
And lastly, drinking coffee when you are already exhausted is always going to be of limited effect. If I drink coffee (or whatever) after 5pm then I will still be awake at midnight. I will still be tired, I just wonāt be able to sleep. The brain needs sleep to regenerate itās supply of neurotransmitters and coffee can never fix this, just mask it in the short term.
As a side note, I once made a coffee with 4 teaspoons of instant coffee and 7 spoons of sugar. I had not slept the night before. It made me feel terrible. My heart raced, I sweated, my brain was filled with electricity but I felt terrible. Donāt do this.
In summary:
If you want to use coffee to stay awake, be healthy and well rested before the event, abstain from coffee/caffeine before the event and drink water with your coffee.