That same person could reach the 0.05 threshold after two to three drinks over the same period, according to the calculator.

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Burke advises Vegas visitors to stick to clear (gin and vodka), high-end alcohols, and drink at least one glass of water after two to three drinks.

BBC: Hangover help from a Las Vegas bus

Kallis reached three figures after the drinks break with an exhilarating six over wide mid-on off Dan Vettori.

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Schwartz came up with the idea of adding vitamins to beer while quaffing drinks with friends after a gym workout three years ago.

FORBES: To Your Health?