How does Jennifer Lopez manage to look so fabulous at 49? “I sum it all up as trying to live a healthy lifestyle,” Lopez tells PEOPLE in this week’s cover story. Eschewing strict, bland diets or a rigid workout schedule, the radiant superstar focuses on getting plenty of sleep — at least 7 to 9 hours a night (“10 or 11 hours on a day off”) — and drinking lots of water.
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