Lack of physical activity is an independent risk factor for both stroke and heart disease. Increasing levels of moderate-to-vigorous exercise (such as brisk walking, gardening, swimming, aerobics, etc.) to an average of about 30 minutes daily can reduce stroke risk. Recent studies suggest that 60 minutes of daily exercise conveys an additional benefit. Exercise helps control obesity and diabetes, increase levels of HDL cholesterol, and may lower blood pressure in some people.

Populations at special risk
Physical inactivity is more prevalent among women than men, among blacks and Hispanics than whites, among seniors than younger adults, and among those of lower socioeconomic status.