Frequently, when I have mentioned to someone that perhaps they may be suffering certain issues due to hydration, they say to me,
“Oh, but I can’t possibly be dehydrated! I’m drinking all day long! I start my day with a big cup of coffee to get me pepped up, then I almost always stop on the way to work to pick up a mocha latte. By the time I arrive at my job, my bladder is ready to burst. While I sit at my desk, I like to drink green tea before lunch. With lunch, of course, I always enjoy a nice, cool milkshake or soda pop, or sometimes a tall glass of iced tea. Then at home, with dinner, I usually enjoy a glass of wine or two (because I heard on the radio that it was healthy). If it’s really hot out, a nice, cold beer is usually just what I need. Often before bed, I even have a glass of hot chocolate or, if it’s hot, a nice iced coffee. Basically, I’m drinking all day! If you think I’m dehydrated, you must be crazy!”
What they don’t realize, of course, is that alcohol and caffeine are actually extremely dehydrating, so even though they might be throwing down waterfalls of booze, soda, and caffeine down their gullets, and even though a glass of beer looks cool and refreshing after a hike in the desert, these beverages will result in a net water loss at the end of the day.