Often we are more susceptible to diseases and flu when our body systems are on low functioning power and our immunity is weaker than usual. We all know the basics on maintaining a fit and healthy lifestyle - but it's not always possible to fit exercise with a balanced and nutritious diet given the fast pace of our modern lives. So what's the solution? The first step is taking a serious evaluation of what we're doing in our daily lives that could be putting our health at risks. For some it may be gorging on junk food at least 2 or 3 times a week. For others, it may be being tied to an office desk from 9-5. Then the next stage is to look at solutions to reduce these unhealthy habbits.
If you're in the latter category, perhaps take breaks more regularly walk around the office, or if there's a gym nearby go to the gym at lunch - even if its only for 30 minutes. An intense 30 minute workout is sometimes better than an hour 30 drawn out workout. If you know your diet is unhealthy and unbalanced - take immediate action. Substitute McDonalds for homemade sandwiches and fruit. Reduce the amount of junk food consumption to once or twice a week maximum. Be strict with yourself.
Its only through changing your lifestyle that you can improve the state of your health, and ensure your less susceptible to succumbing to illnesses like swine flu.