On this episode of Living Beyond 120™, Mark and Dr. Gladden discuss the therapeutic value of introducing younger blood into your system. There is some experimentation happening at places like the Young Blood Institute to explore the positive benefits that younger blood can provide for health and longevity. They consider the old medical procedure of bloodletting and why that could have been helpful. They also discuss the GDF11 protein, an endogenous signaling molecule involved in cell repair, and how this is being utilized in treatments. For more information, visit https://gdf11rejuvenation.com/. Finally, they discuss the immune system and whether or not to get a flu vaccine every year. They talk about what can help the immune system and what can possibly weaken in – including the impact of mindset. They discuss the concept of physiological congruency, in which your brain will perform in ways to match your mindset, disseminating the message throughout your body.