This is a practical, evidence based system with nine focused chapters and four bonus tools that help tech professionals with irregular hours engineer restorative, reliable sleep. It covers circadian essentials, chronotype mapping, environment and light design, shift playbooks, on call damage control, travel and jet lag protocols, nutrition and supplementation, wearable guided iteration, and smart home automations. It includes data backed schedules for rotating shifts, a fourteen day reset plan, and plug and play tools to protect deep sleep without sacrificing performance.