Cardiovascular disease (CVD), which often takes the form of a heart attack or stroke, is a leading cause of death in the United States. Adults who eat a healthy diet and exercise regularly can be at lower risk for CVD than those who do not. National dietary guidelines recommend that adults consume more vegetables, fruits, whole grains, fat-free and low-fat dairy products, and seafood and less salt, saturated and trans fats, cholesterol, added sugar, and refined grains. Physical activity guidelines advise people to exercise at a moderate level (for example, walking) for at least 30 minutes at least 5 days per week or at a vigorous level (for example, running) for at least 20 minutes at least 3 days per week. Unfortunately, most Americans do not follow these guidelines.