I cannot tell: Is this sarcasm? Really: That is not healthy to consume so much caffeine per day, unless you are drinking decaf. Depending upon your size of coffee, they are mostly 6-8 fluid ounces, or about 70-90mg of caffeine per "cup".

Here is a quote that I found:

    > For most healthy adults, up to 400 milligrams of caffeine a day—about four 8-ounce cups of brewed coffee or 10 cans of cola—is considered safe and not linked to negative health effects, according to the U.S. Food and Drug Administration (FDA).