Mild exercise could strengthen immunity against colds, flu
By MELINDA CARSTENSEN | Nov. 1, 2009As cold and flu season approaches, those who want to prevent from getting sick will pay extra attention to eating well, washing their hands, sleeping for no less than eight hours per night and taking their vitamins. All of these things usually come to mind when one thinks about preparing one's immune system for this time of year, but exercising does not.








