Peter Attia, longevity physician and author of *Outlive*, emphasizes a comprehensive approach to healthspan: strength training, metabolic health, sleep optimization, cognitive fitness, and emotional well-being. While Attia's primary recommendations center on behavior and prescription-grade monitoring, he has publicly discussed targeted supplementation to support these pillars—particularly for sleep quality, metabolic resilience, and brain health. This stack draws from his publicly documented insights, substituting functional beverages and adaptogens where direct matches aren't available.