I never drink coffee, can't stand the taste of it >__> even when I was going through finals, with little to no sleep, I TRIED to drink coffee but I just can't have it. I have tea every now and then, but it's because I like it and helps me relax (one of my fave setups is having Earl Grey while inking, I need to be in a calm state of mind to ink properly haha), or hot chocolate when it's cold. I also love Mountain Dew but we don't have it where I live so that's not an option :c
Honestly when it comes to "having energy" I'm mostly trying to have decent sleep schedules lol. Don't underestimate sleep, sleep is important