Eat less, move more, don’t smoke. You know these heart-smart rules, well, by heart. Even so, cardiovascular disease remains America’s biggest killer, and the risk increases as you get older. But whatever your age, it’s never too late to protect your ticker. “80% of heart disease is actually preventable,” says Martha Gulati, M.D., former president of the American Society for Preventive Cardiology. The key? Taking action now. These simple tips will help you get started. Heart t