Only one quarter of young teens are getting enough exercise, according to the Centers for Disease Control and Prevention. Organized sports often aren't enough to meet that hour a day goal. But parents can help by building more activity into family life.

Researchers focused on the activities outside business hours. And they found that your behavior beyond whatever you're doing to make a living appears to affect your chances of heart failure. To minimize the risk, walk when you can and sit only when you must.

Aerobic exercise reduces the risk of diabetes. But it looks like muscle-strengthening exercises help, too, according to the Nurses Health Studies. Even supposedly lighter forms of exercise like yoga and stretching reduced women's risk of developing type 2 diabetes.

Over the last few years, scientists who study the way food influences our brains and bodies have been moving toward a consensus that sugar is addictive. We've rounded up their tips on how to conquer cravings for one of nature's most pleasurable substances.

Sunday's event promotes physical activity, community and alternative transportation.