LOL, I'm limiting my self to just two 14 oz mugs of coffee in the AM and two mugs in the PM , preferably NLT 1400 hours....so I can sleep more soundly that night! Various articles I've read on the Internet lead one to believe this provides some degree of protection against cognitive maladies and a few cancers. If we read it on the Internet, it's got to be true! Besides, if I cut back too much, I get a caffeine withdrawal headache. LOL.
That's a lot more caffeine than I can tolerate. Six ounces of espresso with an equal amount of hot milk is my normal dose, sometimes repeated a couple of hours later, sometimes not. However, on those rare occasions when I can't get my morning eyeopener, I am pretty much useless the rest of the day. Caffeine, breakfast of champions!