The American Health Association doesn't have a monopoly on suggestions for leading a healthy lifestyle, but they certainly have some of the most authoritative information on exercise tips, weight management, and diet. On the "Healthy Living" site, visitors can learn about nutrition, physical activity, weight and stress management and more. There's also a section on helping kids become healthier....

Health care professionals and educators will be delighted to learn about this site, provided that they haven't heard about it already. Created by the National Heart Lung and Blood Institute, this site brings together a number of interactive tools and online resources that will be of great use to those in these fields. The site includes such materials as asthma mortality maps of the United States,...