In this podcast episode, the host interviews a guest who was involved in a docuseries called "Limitless" on longevity. They discuss their experiences during the filming of the show, including physical challenges such as Arctic swims and four-day fasts. They also talk about the benefits of cold water immersion and how it affects brain chemistry. The conversation shifts to the guest's genetic predisposition to fast twitch muscle fibers and their discovery of having two copies of the APO E4 gene, which increases the risk of Alzheimer's disease. The guest shares their decision to share this publicly to encourage others to take control of their brain health. Chris Hemsworth also shares his routine for improving his overall well-being, including mindfulness practices, nutrition, and regular sauna sessions. The podcast encourages listeners to appreciate life and find balance in pursuing their goals. The speaker also discusses the balance between fear and purpose in their life as an artist and their desire to prioritize their family and make more curated choices in their career.