I can describe the human immune system in one word: amazing. Our bodies are designed to fight, to defend themselves against disease. Now, for your immune system to take care of you, you have to feed it, stoke it, and make sure it has what it needs to function at its best. If you want longevity, work on your immunity. So, I give you the new rules for building immunity so you can live a long and healthy life. They’re simple and easy to implement, for you and …