The church is also known for its message on health. It teaches that being healthy helps us to make good decisions, understand God’s Word, be productive in God’s service, and otherwise glorify God with our bodies as temples. Adventists who eat meat typically do not eat meat from pigs, certain fish, and other animals that the Bible names as unclean. Many Adventists are vegetarian (no meat) or vegan (no animal products, such as milk or eggs). They tend to stay away from smoking, drinking and other things known to be harmful or mind-altering. Exercise, being outdoors, resting, and drinking lots of water are other parts to healthy living usually taught by Adventists. In 2005, a National Geographic cover story identified the Adventists living in Loma Linda, California, as one of five Blue Zones of people living longer than the rest of the world. 