I never drank coffee or tea until my early 30s even a sip would make my heart race. Then one day a new job I would sit with coffee drinking coworkers and event

I never drank coffee or tea until my early 30s even a sip would make my heart race. Then one day a new job I would sit with coffee drinking coworkers and eventually I tried tea. I had tea each morning about an 8 ounce cup drinking about half or a bit more. Then another new job setting up a casino before the hvac sysem was in (cold Canadian spring no heat brr) and I stared drinking french vanilla coffee. Starbucks opened a few years later and I was drinking venti cappuccinos with extra shots even at 10pm. It got to the point where I needed it to sleep the caffeine calmed me down instead of revving me up. I guess the typical addict story wanted it then needed it; not to belittle true addicts. I cut down due to GERD later discovered I had hypothyroidism so maybe it was all related. Tea seems to hit me far more than coffee both for heartburn and being jittery. Even through all that I do think I am hypersensitive my liver can't process caffeine as well as some people. I now drink one small cup of instant coffee per day and that's enough for me. I do suffer withdrawal if I don't drink it for a few days maybe a week.