Researchers have a prescription for improving the health of America’s teens: Get more exercise at school. Public health experts recommend that kids spend at least 30 minutes of the school day engaged in moderate to vigorous physical activity. That would get them halfway to the goal of exercising for at least an hour each day. To…

Researchers have a prescription for improving the health of America’s teens: Get more exercise at school. Public health experts recommend that kids spend at least 30 minutes of the school day engaged in moderate to vigorous physical activity. That would get them halfway to the goal of exercising for at least an hour each day. To…

Note: Read our discussion guidelines before commenting.