Resources to Learn How to Get Your Kids Active and Healthy

July 15, 2008— -- A new study in Wednesday's Journal of the American Medical Association said that, as kids grow, they cut back dramatically on exercise.

The study followed about 1,000 U.S. children across a spectrum of ages, and its findings have prompted the National Institutes of Health to reiterate its call for greater physical activity among American children.

The federal Dietary Guidelines for Americans recommend that children and adolescents engage in at least 60 minutes of physical activity, seven days a week.

To find out what a healthy weight is for your growing child, check out the Centers for Disease Control and Prevention's body mass index (BMI) chart, especially designed for children.

For more information on BMI and how to interpret your child's percentile, click here.

ABC News' Medical Unit compiled a list of the following organizations that provide resources on how to encourage your kids to get off the couch and get outside.