The contest was to see how much water the competitors could drink without needing to urinate. The bladder holds about 12-15 ounces of urine. I heard on the news this morning that the competitors were given 8 ounce bottles of water every 15 minutes by the radio station staff for the first couple of hours of the contest, and that the woman who died drank almost 2 gallons of water before she quit. They should have sent her straight from the radio station to the hospital. It sounds like she died from massive sodium, potassium and other electrolyte imbalances from all that water A nurse called the station to point out what a potentially risky idea the contest was, but was rebuffed by one of the hosts.