You know you need to get enough sleep, eat a balanced diet and drink lots of water. But do your health smarts stop there? “When it comes to their well-being, many women look at the big picture without stopping to think about the individual facts and figures that can help them live longer, healthier lives,” says Holly Thacker, M.D., director of the Center for Specialized Women’s Health at the Cleveland Clinic Foundation in Ohio. Are you one of these in-the-dark individuals? Take this quiz to test your health knowledge -- and learn the numbers every woman should know.