A jogger runs near downtown Houston. Recent studies show that running doesn't increase the risk of arthritis, and some runner's actually have healthier joints. David J. Phillip/AP hide caption

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Being in the right place at the right time, like living in the same college dorm, is a strong predictor of friendship. iStockphoto.com hide caption

itoggle caption iStockphoto.com

A recent study in the Journal of Food Science suggests that green beans, beets and garlic maintain their antioxidant levels even after most kinds of cooking. The antioxidant value in carrots actually increased after gentle cooking. istockphoto.com hide caption

itoggle caption istockphoto.com