17 Worst Habits for Your Heart
Sitting for hours on end increases your risk of heart attack and stroke, even if you exercise regularly.
"Intermittent exercise doesn't compensate for the time you sit," says Harmony R. Reynolds, MD, associate director of the Cardiovascular Clinical Research Center at NYU Langone Medical Center, in New York City.
Why? The lack of movement may affect blood levels of fats and sugars.
Dr. Reynolds advises walking around periodically and, if you're at work, standing up to talk on the phone.