I drank five or six cups of coffee a day for decades. I’d even have a cup before going to bed — that’s how tolerant I had become.

Got a mild flu/Covid/cold couple years ago. Better in a week. But, during the illness and since, the slightest bit of caffeine would make be incredibly wired to the point of panic attacks. Had to quit cold turkey. I’ve tried a cup now and again, and it’s the same thing: 6 hours of overwhelming anxiety.

Wierd. It’s like I became hypersensitive to caffeine. Oddly, though, nicotine doesn’t have that effect, and I always figured the two stimulants were similar.