If anyone knows what it takes to push through a workout, stay calm under pressure or fuel up for a long day, it's an Olympic athlete. And what they've learned extends way beyond sports. Their lessons show you how to succeed, no matter what your goals. Here, top athletes -- many of whom have already qualified for the London games as of press time -- share their go-to moves for everything from toning up to getting some shut-eye the night before four billion people watch them compete. Take their gold-medal advice.