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Explore a developer's journey to optimize sleep using JavaScript in this 29-minute conference talk from Reject.JS 2014. Discover how Nick Rowe hacked his body to control his sleep cycle, starting with the creation of an artificial sunrise in 2009. Learn about the science behind dawn and dusk simulations, and why tools like f.lux are popular among developers for improving sleep quality. Follow the evolution of Rowe's system, called Spirit, and understand why JavaScript was chosen for its development. Gain insights into how technology can complement human biology, and find out how to start your own sleep-hacking journey with accessible and affordable methods.