Tuesday, July 05, 2011
How much water do you need to drink when it's warm outside?
Many people are dehydrated-it's a year-round problem, made worse when it's hot or when you're sweating. Dehydration makes you feel lousy: Your cells get sluggish, your body had to work extra hard to suck in water from the kidneys and colon, and your blood pressure may drop.
This situation can be compounded by the consumption of caffeinated beverages, such as coffee, tea, or diet soda. Caffeine can act as a diuretic, which forces the kidneys to expel more fluid than usual before it can hydrate the body's cells.
Even moderately active people need at least two quarts of fluid a day. Aim to drink eight to nine 8-ounce glasses of non-caffeinated, unsweetened (or minimally sweetened) beverages by 3 p.m. By midday, your urine should be clear; if it's dark, you need more hydration. Reach for a tall glass of water - rather than coffee or candy - for an energy boost.