A heart age that's 5 to 10 years younger than your chronological age.
Change Your Number
Regardless of how many years you've actually lived, an "old" heart is often identified by plaque buildup that restricts blood flow or hardens arteries. If you reduce the plaque, you can take as much as a decade off your heart's age. To do so, aim to eat 30 g of fiber daily (good sources are vegetables, beans, nuts, seeds, berries, apples and citrus fruits), exercise regularly, maintain a healthy weight and avoid cigarettes.
Source: Steven Masley, MD, fellow, American Heart Association, and author, The 30-Day Heart Tune-Up.