"Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging" by Ben Greenfield explores strategies to optimize brain function, enhance performance, and slow aging. The book covers sleep improvement, energy production, cognitive enhancement, and longevity, incorporating biohacking techniques, nutrition, and fitness methods. Greenfield discusses tools such as mitochondrial support, vagus nerve stimulation, nootropics, and peptides to boost health. Applying these insights can help individuals improve resilience, increase vitality, and achieve peak mental and physical well-being through science-backed approaches.