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Water serves vital purposes in your body, like carrying nutrients to cells and keeping ear, nose and throat tissues moist. So try to drink 48 ounces (or six glasses) of water a day. If you're pregnant, breastfeeding, fighting a fever, or exercising regularly, you'll need to drink even more -- 64 ounces (or eight glasses) a day. Sound like a lot? Here are ways to help you reach that target amount:

Keep a fancy glass you enjoy drinking from on your desk at work or a table at home. That way, you're more likely to look at the glass and remember to fill it up.

If you like a little flavor, add a slice of lemon, lime, or orange.

Try sparkling water such as club soda or seltzer. (Check the label to be sure it has zero calories and that the only ingredient is water.)

Fill a pitcher with the amount you want to drink, and aim to empty it every day.