Studies who that stress, life crises, and negative emotional states increase the risk of acute respiratory infections like colds, flu, and similar conditions. Could stress reduction techniques such as mindfulness, meditation, and physical exercise have a preventive effect? The U.S. National Institutes of Health (NIH) decided to find out. Nearly 400 study participants completed a stress management training program, and the results were positive. Participants did experience fewer flu, colds, and respiratory infections. The Centers for Disease Control and Prevention (CDC) say the best way to prevent the flu is to get a flu shot - it's reportedly 40 to 60 percent effective. But keeping your immune system healthy by better managing stress is no doubt a good idea. With easy and regular habits of meditation and exercise you can reduce stress while calming the mind and the body. An ounce of prevention goes a long way. For more on this study, go to www.med.wisc.edu.