In a world obsessed with optimization, where morning routines start at dawn and work never seems to end, it''s no wonder we feel more depleted than ever. Drawing from two decades of research and consulting with organizations across thirty countries, Dr. James Hewitt reveals a startling paradox: as our knowledge of performance optimization has expanded, our sense of well-being has contracted.In this groundbreaking book, Hewitt challenges both the relentless grind of hustle culture and the passive withdrawal of ‘quiet quitting’ instead offering a revolutionary third way: Regenerative Performance. Through compelling research and real-world examples, he demonstrates how sustainable success comes not from perpetual optimization, but from the rhythmic oscillation between effort and renewal.Whether you are struggling with sleep despite tracking every metric, feeling overwhelmed by endless meetings, or caught in cycles of burnout and recovery, this book provides actionable insights to transform how you work and live. Hewitt masterfully integrates cutting-edge neuroscience, performance psychology, and his personal journey -- including his experiences as a full-time racing cyclist and a cancer survivor -- to show how we can thrive in an always-on world without sacrificing our well-being.Regenerative Performance is not just another self-help manual – it is a science-backed framework for achieving exceptional results while maintaining the energy and resilience needed for long-term success. Forget optimization. Master regeneration.