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  • How to Boost Your Immune System. Learn how to make your body resistant to germs and disease

  • so you can live a longer, healthier life. You will need daily moderate exercise, something

  • to laugh about, optimism, lots of friends, a healthy diet, seven to nine hours of sleep

  • per night, optional a bridge group. Step 1. Get moving: Just 30 minutes a day of moderate

  • exercise will do. You can even split it into three 10-minute bursts of activity. Step 2.

  • Find something to laugh about every dayeven force it if you have to. Real or fake,

  • laughter strengthens your immune system by increasing good-for-you hormones and reducing stress ones;

  • lowering your blood pressure; and slowing your resting heart rate. Step 3. Train yourself

  • to look at the bright side. Optimistic people were two and a half times less likely to develop

  • cancer of any kind than their pessimistic peers, according to one study. Step 4. Make

  • time for the friends you have and cultivate new ones. A study found that seniors with

  • a lot of pals were 22 percent less likely than their less social counterparts to die

  • during the decade when they participated in the study. Start a bridge group. Research

  • shows that bridge boosts the body's defense against infections and illness. Step 5. Eat

  • a healthy diet: at least five servings of fruits and vegetables a day focusing on the

  • antioxidant powerhouses; complex carbs, fatty fish, and a few cups of green tea at least

  • two times a week; a daily handful of nuts; no more than one glass of alcohol per day;

  • and a limited amount of meat and sweets. Eat more mushrooms during cold and flu season:

  • Research shows that when a virus is present, mushrooms may rally the immune system to fight

  • them. Step 6. Get at least seven hours of sleep every night, more if you can. Did you

  • know, the first scientists to prove that the body defends itself against disease through

  • the immune system shared the Nobel Prize in 1908.

How to Boost Your Immune System. Learn how to make your body resistant to germs and disease

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