Beyoncé scored big time at the 2010 Grammy’s, winning six awards—a record for the singer. She also totally sizzled on stage as she sang “If I Were a Boy” in this crazy-awesome black dress. While the superstar makes being super fit look easy, she admits it’s actually really hard work. “It’s more about your mental strength than physical strength. You have to push yourself. If doesn’t matter what trainer you have. And it doesn’t matter what program you’re on. You have to be healthy and make the right choices,” she’s said.