100% Juice

The trick is to scrutinize the label for the words "100 percent juice." "Choosing only 100 percent juice ensures you're getting nutrients," says Clark.

It's worth the effort because fruit juices can deliver big benefits. Eight ounces of OJ, for instance, provides 120 percent of the Daily Value (DV) of vitamin C and is a good source of potassium and folic acid; fortified versions offer up to 35 percent of calcium or 25 percent of vitamin D. Pineapple juice has 100 percent of your vitamin C and 10 percent of your potassium for the day. The polyphenols in Concord grape juice have the same protective effect against heart disease as red wine, minus the buzz. Recent studies suggest that trendy drinks like pomegranate juice and goji berry extract offer huge amounts of antioxidants, and cherry juice has been linked to relieving muscle soreness. And a study in the September 2006 American Journal of Medicine suggests that drinking three servings of juice a week–your choice–may help fight dementia and Alzheimer's disease. Useable