fascinating facts about smiling

1. Forcing yourself to smile can boost your mood: Psychologists have found that even if you're in bad mood, you can instantly lift your spirits by forcing yourself to smile.
2. It boosts your immune system: Smiling really can improve your physical health, too. Your body is more relaxed when you smile, which contributes to good health and a stronger immune system.
3. Smiles are contagious: It's not just a saying: smiling really is contagious, scientists say. In a study conducted in Sweden, people had difficulty frowning when they looked at other subjects who were smiling, and their muscles twitched into smiles all on their own.
4. Smiles Relieve Stress: Your body immediately releases endorphins when you smile, even when you force it. This sudden change in mood will help you feel better and release stress.
5. It's easier to smile than to frown: Scientists have discovered that your body has to work harder and use more muscles to frown than it does to smile.
6. It's a universal sign of happiness: While hand shakes, hugs, and bows all have varying meanings across cultures, smiling is known around the world and in all cultures as a sign of happiness and acceptance.
7. We still smile at work: While we smile less at work than we do at home, 30% of subjects in a research study smiled five to 20 times a day, and 28% smiled over 20 times per day at the office.
8. Smiles use from 5 to 53 facial muscles: Just smiling can require your body to use up to 53 muscles, but some smiles only use 5 muscle movements.
9. Babies are born with the ability to smile: Babies learn a lot of behaviors and sounds from watching the people around them, but scientists believe that all babies are born with the ability, since even blind babies smile.
10. Smiling helps you get promoted: Smiles make a person seem more attractive, sociable and confident, and people who smile more are more likely to get a promotion.
11. Smiles are the most easily recognizable facial expression: People can recognize smiles from up to 300 feet away, making it the most easily recognizable facial expression.
12. Women smile more than men: Generally, women smile more than men, but when they participate in similar work or social roles, they smile the same amount. This finding leads scientists to believe that gender roles are quite flexible. Boy babies, though, do smile less than girl babies, who also make more eye contact.
13. Smiles are more attractive than makeup: A research study conducted by Orbit Complete discovered that 69% of people find women more attractive when they smile than when they are wearing makeup.
14. Babies start smiling as newborns: Most doctors believe that real smiles occur when babies are awake at the age of four-to-six weeks, but babies start smiling in their sleep as soon as they're born.

10 Health Habits That Will Help You Live to 100

The biggest factor that determines how well you age is not your genes but how well you live. Not convinced? A new study published in the British Medical Journal of 20,000 British folks shows that you can cut your risk of having a stroke in half by doing the following four things: being active for 30 minutes a day, eating five daily servings of fruit and vegetables, and avoiding cigarettes and excess alcohol.

While those are some of the obvious steps you can take to age well, researchers have discovered that centenarians tend to share certain traits in how they eat, move about, and deal with stress—the sorts of things we can emulate to improve our own aging process. Of course, getting to age 100 is enormously more likely if your parents did. Still, Thomas Perls, who studies the century-plus set at Boston University School of Medicine, believes that assuming you've sidestepped genes for truly fatal diseases like Huntington's, "there's nothing stopping you from living independently well into your 90s." Heck, if your parents and grandparents were heavy smokers, they might have died prematurely without ever reaching their true potential lifespan, so go ahead and shoot for those triple digits.

1. Don't retire. "Evidence shows that in societies where people stop working abruptly, the incidence of obesity and chronic disease skyrockets after retirement," says Luigi Ferrucci, director of the Baltimore Longitudinal Study of Aging. The Chianti region of Italy, which has a high percentage of centenarians, has a different take on leisure time. "After people retire from their jobs, they spend most of the day working on their little farm, cultivating grapes or vegetables," he says. "They're never really inactive." Farming isn't for you? .

2. Floss every day. That may help keep your arteries healthy. A 2008 New York University study showed that daily flossing reduced the amount of gum-disease-causing bacteria in the mouth. This bacteria is thought to enter the bloodstream and trigger inflammation in the arteries, a major risk factor for heart disease. Other research has shown that those who have high amounts of bacteria in their mouth are more likely to have thickening in their arteries, another sign of heart diesease. "I really do think people should floss twice a day to get the biggest life expectancy benefits," stresses Perls.

3. Move around. "Exercise is the only real fountain of youth that exists," says Jay Olshansky, a professor of medicine and aging researcher at the University of Illinois at Chicago. "It's like the oil and lube job for your car. You don't have to do it, but your car will definitely run better." Study after study has documented the benefits of exercise to improve your mood, mental acuity, balance, muscle mass, and bones. "And the benefits kick in immediately after your first workout," Olshansky adds. Don't worry if you're not a gym rat. Those who see the biggest payoffs are the ones who go from doing nothing to simply walking around the neighborhood or local mall for about 30 minutes a day. Building muscle with resistance training is also ideal, but yoga classes can give you similar strength-training effects if you're not into weight lifting.

4. Eat a fiber-rich cereal for breakfast. Getting a serving of whole-grains, especially in the morning, appears to help older folks maintain stable blood sugar levels throughout the day, according to a recent study conducted by Ferrucci and his colleagues. "Those who do this have a lower incidence of diabetes, a known accelerator of aging," he says.

5. Get at least six hours of shut-eye. Instead of skimping on sleep to add more hours to your day, get more to add years to your life. "Sleep is one of the most important functions that our body uses to regulate and heal cells," says Ferrucci. "We've calculated that the minimum amount of sleep that older people need to get those healing REM phases is about six hours." Those who reach the century mark make sleep a top priority.

6. Consume whole foods, not supplements. Strong evidence suggests that people who have high blood levels of certain nutrients—selenium, beta-carotene, vitamins C and E—age much better and have a slower rate of cognitive decline. Unfortunately, there's no evidence that taking pills with these nutrients provides those antiaging benefits. "There are more than 200 different carotenoids and 200 different flavonoids in a single tomato," points out Ferrucci, "and these chemicals can all have complex interactions that foster health beyond the single nutrients we know about like lycopene or vitamin C." Avoid nutrient-lacking white foods (breads, flour, sugar) and go for all those colorful fruits and vegetables and dark whole-grain breads and cereals with their host of hidden nutrients.

7. Be less neurotic. It may work for Woody Allen, who infuses his worries with a healthy dose of humor, but the rest of us neurotics may want to find a new way to deal with stress. "We have a new study coming out that shows that centenarians tend not to internalize things or dwell on their troubles," says Perls. "They are great at rolling with the punches." If this inborn trait is hard to overcome, find better ways to manage when you're stressed: Yoga, exercise, meditation, tai chi, or just deep breathing for a few moments are all good. Ruminating, eating chips in front of the TV, binge drinking? Bad, very bad.

8. Live like a Seventh Day Adventist . Americans who define themselves as Seventh Day Adventists have an average life expectancy of 89, about a decade longer than the average American. One of the basic tenets of the religion is that it's important to cherish the body that's on loan from God, which means no smoking, alcohol abuse, or overindulging in sweets. Followers typically stick to a vegetarian diet based on fruits, vegetables, beans, and nuts, and get plenty of exercise. They're also very focused on family and community.

9. Be a creature of habit. Centenarians tend to live by strict routines, says Olshansky, eating the same kind of diet and doing the same kinds of activities their whole lives. Going to bed and waking up at the same time each day is another good habit to keep your body in the steady equilibrium that can be easily disrupted as you get on in years. "Your physiology becomes frailer when you get older," explains Ferrucci, "and it's harder for your body to bounce back if you, say, miss a few hours of sleep one night or drink too much alcohol." This can weaken immune defenses, leaving you more susceptible to circulating flu viruses or bacterial infections.

10. Stay connected. Having regular social contacts with friends and loved ones is key to avoiding depression, which can lead to premature death, something that's particularly prevalent in elderly widows and widowers. Some psychologists even think that one of the biggest benefits elderly folks get from exercise the strong social interactions that come from walking with a buddy or taking a group exercise class. Having a daily connection with a close friend or family member gives older folks the added benefit of having someone watch their back. "They'll tell you if they think your memory is going or if you seem more withdrawn," says Perls, "and they might push you to see a doctor before you recognize that you need to see one yourself."