Last week during Weird Science, Sci got to hear a lot more about people’s urine odors than she probably ever REALLY wanted to know.
But hey, why be shy?
And so you may imagine that urine and fluids have been on Sci’s mind a little bit lately. Another thing has also been on Sci’s mind: the sheer amount of coffee that she has been drinking.
She may be actually jonesing for her late PM dose right about now…
Sci has heard from many quarters that Coffee makes you pee, and that this is because caffeine is a diuretic. On the other hand, Sci has also heard that coffee only makes you pee because it’s a liquid and you’re drinking it, rather than any specific diuretic properties. So which is it?
This question is of great concern to Sci for several reasons. First, Sci drinks a lot of coffee. Second, Sci is a distance runner, and likes to compete in races. She’s been reading a lot lately about how caffeine just before a workout or race is good, and can increase your performance. However, IF caffeine is ALSO a diuretic, this is something to keep in mind, because there is NOTHING worse than getting halfway through a 30K (18.5 miles, so say you’re 9 miles in or so), and realizing that you REALLY have to pee (well, ok, maybe realizing you have diarrhea, or are going to vomit, pass out, or have a heart attack). Races always talk about having port-o-johns, but at the side of the trail? HAHAHAHAHAHA. No. Sci doesn’t mind peeing in the woods, of course, but it wastes some seriously valuable time, especially in the shorter races, when a 30 second bathroom break WILL kill your chances of a win.
And so, Sci was curious, diuretic or not? She decided to take a look around.
Maughan and Griffin. “Caffeine ingestion and fluid balance: a review” Journal of Human Nutrition and Dietetics, 2003.
Riesenhuber et al. “Diuretic potential of energy drinks.” Amino Acids. 2006.
Armstrong et al. “Fluid, electrolyte, and renal indices of hydration during 11 days of controlled caffeine consumption.” Int J Sport Nutr Exerc Metab. 2005.
Eeek! Hold on, pee break!