How much water do you need?

The International Bottled Water Association has a great online calculator to determine your water needs and provide the following tips.

Keep in mind that there are other factors that may require you to drink more water. Here's a look at a few:

Dry Air Up There: To combat low humidity levels on airplanes, drink one 8-ounce serving of water for every hour in the air.

Winter Woes: The colder it gets outside, the more energy your body requires to maintain a 98.6 degree temperature, AND the more water your body needs. So be sure to drink extra water in cold weather.

Flu Blues: Maladies such as pneumonia and the flu can sometimes lead to dehydration, so be sure to drink more water when you are sick.

Beat the Heat: If you plan to spend considerable time outside in warm weather, prepare by drinking one to two extra 8-ounce servings of water.

Moms Need More: Due to high concentrations of water in breast milk, nursing mothers require three additional 8-ounce servings of water per day. Drink up, mom!

Pregnancy Increases Need: You'll gain as much water weight as baby weight when you are pregnant. This is in the form of increased blood volume, amniotic fluid, and tissue fluids. Be sure to drink 8 to 12, 8-ounce servings a day.