In episode four of Contrast Convos, the hosts dive into the world of biohacking with special guest Biohack Zack, the manager of Vitality Wellness Center. Zack discusses the origins of his passion for biohacking, defining it as optimizing health through external and internal environmental changes. They explore foundational principles like hot and cold therapies, the importance of eliminating toxins, and cost-effective practices such as grounding and light exposure. The discussion also touches on the benefits of breathwork, the role of music and sound frequencies in health, and the future of personalized medicine, including gene therapy and peptides. Practical insights and easy-to-implement biohacks are offered throughout the episode, making it a valuable listen for anyone interested in optimizing their well-being.