#RWellnessParadise: Our immune system does a remarkable job of defending you against disease-causing microorganisms. Here are some helpful ways to strengthen your immune system and fight off disease: 1. Drink lots of water Water helps all of your body's systems function at optimum levels. Drinking plenty of water flushes toxins and ensures that your cells get all of the oxygen they need to function as they were meant to. 2. Eat healthy What you eat does affect your immune system so eating an ove