Dave Asprey's "Smarter Not Harder" explains how to optimize your body's natural energy systems to achieve a higher level of performance. Asprey argues that we can "hack" our bodies' inherent tendency towards laziness by understanding and working with the body's natural processes, rather than fighting against them. He presents a variety of techniques, ranging from diet and nutrition to exercise, stress management, and spiritual practices. Asprey also discusses the use of technology, such as neurofeedback and electrical stimulation, to enhance performance and well-being. Overall, the book provides a comprehensive guide to biohacking, empowering readers to take control of their health and achieve their full potential.