Did you know that taking a 10-minute shower uses up to 60 gallons of water? Yep. But a Navy shower — in which you get wet, turn the water off while cleansing, and then rinse — uses less than a 10th as much. Over the course of a year, one person can save almost 15,000 gallons of water. It's an ecologically sound idea, but putting it into practice on a cold January morning might be tough. Do you conserve as you clean, or are you a shower lingerer?