When you're deep under the covers with a box of tissues by your bedside do you turn green with envy thinking of those people who never seem to get ill? Want to be one of them? While colds won't kill you, they can weaken your immune system, allowing other, more serious, germs to take hold. Given that most of us have two or three colds a year, that's a lot of opportunities for serious illness. Although it's impossible to promise that you'll never catch another cold or suffer from another bout of flu, you can increase your odds of staying well with these strategies. And if you do get sick, there are some tips on how to get better faster.