I stopped several weeks ago. No caffeine for me. I have essential hand and arm tremors and it worsens when I focus during billiards. I did some research on holistic treatments and learned that stopping caffeine and taking am magnesium supplement could
reduce the tremors. It has had a significant beneficial effect for me. Following severe TLE seizures as a teen, I developed a head tremor and had vestibular dysfunction that I have reason to believe was caused (for 2 decades) by aberrant electrical signals
in my brain. I have done some preliminary research into deep brain stimulation therapy and have given thought to having a transmitter implanted in my brain to intercede with the erroneous signals emanating from the damaged area in my temporal lobe.
If it helps my pool game, it will have been worth it. LOL