In the past days I've had cups of coffee. So I've been drinking about cups a day.

A whopping of those cups were pour overs, which I love. My last was a cup of from . I drank it .

Let's wave our hands and say each cup is 12oz. That's oz of coffee, or oz a day. There are 20 milligrams of caffeine per ounce of coffee. That means mg of caffeine daily.

So, as you're reading this, I have mg of caffeine in my blood stream. This is assuming I metabolize caffeine in the liver with a half-life of about 4.5 hours.

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