I probably average between 1 and 2. On most days I don't have any coffee, tea, or caffeinated beverage. But there are some nights where I will drain a dozen cup of coffee at a local Denny's while working on something for the next morning.
Accept the past. Live for the present. Look forward to the future. Robot Fusion
"As our island of knowledge grows, so does the shore of our ignorance." John Wheeler
"[A] scientist looking at nonscientific problems is just as dumb as the next guy." Richard Feynman
"[P]etabytes of  data is not the same thing as understanding emergent mechanisms and structures." Jim Crutchfield
i drink one cup of coffee in the morning when i get to work, it's folgers but it's free! if i'm super out of it i have an additional half cup. about once a week i treat myself to a mocha from the coffee shop on my way to work, cashflow permitting. whole milk, with whip cream. yummmm.
just throw it against the wall and see what sticks.