I didn't get too far down the rabbit hole. I did the caffeine and l-theanine stack for a while which worked well. Others got into moda and while I never did, I did get into an mlm (groan) product called thrive. I used it about a year: shakes, patches, pills daily of a bunch of natural stims. I loved the product but hated the mlm aspect of it.
That was the year I started the agency and I played league volleyball 4 nights a week. 2 indoor leagues and 2 outdoor. Won a championship in one indoor and one outdoor season that year. I'd also sub for others after my matches, playing all night after work. Looking back it was good for me mentally, temporarily physically, and was a great start for the new business.
After a year or so I got adrenal burnout (big surprise) which took a couple years to fully recover. While I still have some caffeine/l-theanine stack powders, as I get older I get more sensitive to stims so I don't even drink regular coffee daily.
While I pushed things to the extreme and wouldn't recommend it, going for an easy stack like above or trying moda would be attractive if I needed to be on point all day again.
