There is no express authority in the Constitution for judicial. review, and the argument in favor of the authority by implication, as. applied to national legislation, is far from conclusive. The argument for judicial review was formulated by Chief Justice.
But, if you don't drink much, your kidneys only produce a small amount of concentrated urine, keeping as much water as possible in your body. In 24 hours, your kidneys filter around 150 litres of blood and produce roughly 1.5 litres of urine.
The average human has about 1.0 to 1.5 gallons of blood. The kidneys continually filter this throughout the day, all the blood being filtered about once every 45 minutes or so. The BBC Body page puts the figure at 150 liters a day which is around 40 US (33 UK) gallons. Other data source puts the figure at about 180 liters a day, which is 48 US ( 40 UK) gallons.