I usually have 2 cups of coffee in the morning. About 3 times a week, in cold weather, I drink 1-2 cups of tea in the afternoon. Pretty sure I don’t have a caffeine problem, as on the rare occasions that I must skip my coffee I am not really bothered. I know that some people get headaches if they miss the coffee.
I never drink coffee. I started drinking Cola a lot more when I started on second shift and then I moved to third shift. Even “Meatloaf” wasn’t enough..I had to go to COLA too. LOL