Charlie Munger takes a unique approach to physical activity that contrasts with many modern wellness routines. Rather than following a structured exercise regimen, he believes in engaging in physical activities only when they're enjoyable, such as playing tennis. This approach aligns with his broader philosophy of sustainability in daily habits. He never purposely focused on exercise except when required by the Army Air Corps, demonstrating that success and longevity can be achieved through various lifestyle approaches. His emphasis has always been on mental fitness rather than physical exercise, proving that there's no one-size-fits-all approach to personal wellness.

Munger's extensive reading habit (often 8+ hours daily) is integrated into his work rather than being separate from it. He views reading as an essential part of his job and decision-making process, not as a leisure activity. His approach includes reading across multiple disciplines, from scientific journals to annual reports, making it a fundamental part of his professional routine. He maintains this habit by eliminating time-wasting activities and prioritizing reading as a core component of his daily schedule. This disciplined approach to continuous learning through reading has been one of the key factors in his success, allowing him to build a vast mental library of knowledge that informs his business decisions.

Munger handles stress through a combination of mental discipline and strategic thinking. He developed his 'Water Mindset' approach, which emphasizes flexibility and adaptability rather than rigid responses to pressure. When faced with complex decisions, he applies his mental models framework, breaking down problems into manageable components. He also learned to deliberately blank out his mind when needed, especially before sleep, to avoid wrestling with problems at inappropriate times. This balanced approach to stress management, combined with his emphasis on continuous learning and preparation, helps him maintain clarity in high-pressure situations.

Munger's note-taking system focuses on active engagement with reading material through careful annotation and synthesis. He emphasizes the importance of summarizing key points and creating connections between different pieces of information. Rather than just collecting information, he processes it by relating new concepts to his existing knowledge base, particularly through his mental models framework. This systematic approach to note-taking helps him retain and apply information effectively in his decision-making process.

While seemingly trivial, Munger's afternoon peanut brittle habit (specifically from See's Candies, a Berkshire Hathaway company) represents his broader philosophy about balance in life. He often jokes that it's key to his longevity, but more importantly, it demonstrates his belief in enjoying simple pleasures while maintaining a disciplined lifestyle. This habit shows that even highly successful individuals can incorporate small indulgences into their routines without compromising their effectiveness.

Munger's routine has evolved to become more focused on mental activities rather than physical ones as he's aged. In his younger years, he struggled more with sleep due to an active mind wrestling with problems. Over time, he developed better strategies for mental unwinding and sleep preparation. He's also adapted his reading and learning habits to focus more on depth rather than breadth, concentrating on areas where he can add the most value. This evolution shows his practical approach to aging and adaptation while maintaining core principles of continuous learning and mental engagement.

Munger's preference for early morning hours stems from his belief in the importance of setting a productive tone for the day. Early rising allows him to tackle important tasks when his mind is fresh and there are fewer distractions. This habit enables him to prepare thoroughly for meetings and dedicate time to reading and analysis before the day's obligations begin. The early start also aligns with his philosophy of taking control of one's time and creating space for focused work and continuous learning.

Munger maintains his mental sharpness through a combination of practices: extensive reading across diverse subjects, engaging in strategic thinking through activities like Bridge, and maintaining clear boundaries between focused work and relaxation. He avoids time-wasting activities and emphasizes the importance of continuous learning. His approach includes regular mental exercises, strategic breaks, and the practice of synthesizing information across different disciplines. Additionally, his habit of writing letters to shareholders and engaging in meaningful discussions helps keep his mind active and engaged.