The main focus is on the immune system, including the organs, glands, tissues, cells, and signaling molecules that make this amazing system know what is us and what is not us. Innate and acquired immune responses are introduced, along with the complement response. The intricate connections between the immune system and the nervous system, and the immune system and the microbiome, between the microbiome and nervous system are presented. Breakout groups were for discussing what participants are already doing that enhanced the immune system in their sessions. Roger Tolle led a wonderful movement piece with a focus on lymphatic flow and immune buffering with awe, humor and joy.