So I did try it today sublingual before the gym.
It took about 1 hour for me to fully feel like I could just keep pushing and have no fatigue whatsoever. I was working with weight that would usually be at the tip of my last set.
I had the feeling of wellness and focous and drive that I have not felt in a while. I pushed ro the very end. After the gym and still not my mind is super focused and I did not have an after gym crash like I sometimes have after a hard session.