Too Much of a Good Thing?

Coffee can have this effect:

It isn't all fun and games. "After about four stores, the coffee loses all taste," says Winter, who's unconcerned about any long-term effects of so much coffee. "It doesn't taste good at all—I'm not enjoying drinking it. After an extreme number of stores, I have to wash out the taste with water after every sip because it's starting to make me sick."

Fortune reports on a man attempting to visit every Starbucks:

There is no stopping Starbucks' worldwide expansion. One man thinks he can at least keep up. Meet Winter, Starbucks hunter.