Twelve years ago or so I was up to 8-10 mugs a day. Not cool. After a year of this I quit cold turkey and went through two weeks of hell - everything was too lo

Twelve years ago or so I was up to 8-10 mugs a day. Not cool. After a year of this I quit cold turkey and went through two weeks of hell - everything was too loud, everything was too bright, I had a persistent splitting headache and was extremely irritable (even more than usual). I didn't drink any coffee at all for several years, and then we got a coffee machine as a Christmas gift and I started drinking it again, albeit in strict moderation. These days I stick to one or two coffees a day - one in the morning and sometimes one around 1-2 PM when I hit an energy trough. If I have more than two cups, I toss and turn all night and wake up exhausted ... which of course prompts me to drink still more coffee.