Earlier quoted context omitted.
Yup. I, on the other hand, on 3 cups daily felt like a zombie. Then I quit cold turkey and after a week I felt better that any time in the previous months. When I occasionally forget myself and ingest more than minimal dose of caffeine (one strong coffee is sufficient) I get dizzy, my sleep patterns immediately go out of whack and if I keep ingesting caffeine I get face muscle twiches and a sense that something very…
Decaf still has enough caffeine left in it that it affects me. So interesting how differently bodies react to different amounts. I can't even have some kinds of chocolate.
Things we ingest have many weird organic substances which we don't pay much attention to because they don't noticeably harm nearly all people. But there's no guarantee they will not somewhat harm anybody.
Nothing we eat or drink was perfectly designed for human consumption. We just kind of get away with it.