Skip the diet soda and start getting your fill on water. Besides being good for you, water helps your body get rid of toxins, and constant sipping can help keep you from over-snacking. So grab a bottle you can tote around with you and figure out how many refills you'll need to get your daily fill. Eight glasses a day is a good round number, but the amount of water your body requires is really based on your weight. How much do you need? Divide your weight in half. The resulting number equals the ounces of water you should be drinking every day.
Tip for the Taking: Get a filtered water pitcher for better-tasting water, and add a few lemons or limes to your water bottle to give it some flavor.