MedicineNet.com | Parenting Pictures Slideshow.

Children need at least an hour of moderate to strenuous physical activity every day to stay healthy, according to experts. But many kids just aren’t getting that much exercise. And most groups are unanimous on the prime culprit: sedentary entertainment, meaning the temptations of the TV, computer, and video games.

So, your first step toward encouraging a healthy level of physical exercise should be to limit your children’s TV and screen time. Beyond that, here are some tips from the experts on how to help your children (and yourself) stay active.