You’re not looking for platitudes—you’re looking for a build. Clockwork Week delivers a precise, hobbyist‑friendly protocol for re‑aligning your internal clock without pharmaceuticals. Across seven evenings, you’ll execute a reproducible sequence that leverages controllable zeitgebers: timed light exposure, targeted cooling/warming, breath cadence, proprioceptive loading, meal timing, and low‑noise cognitive off‑ramps. Every step is specified with minutes, ranges, and pass/fail checkpoints so you can run the routine like a mini experiment and log results with confidence. Inside you’ll find a daily timing grid, actuator checklists, a “what to do if you slip” recovery flow, and travel/night‑shift adaptations. Expect calmer physiology, shorter latency to lights‑out, and more stable morning energy—without guesswork. Written in a clean, technical voice for curious tinkerers, this field guide prioritizes mechanisms that move the needle and omits fluff you’ll never use. If you love dialing in systems and watching metrics improve, this is your one‑week rebuild. Run the plan tonight, record the delta tomorrow, and iterate toward a cadence that finally holds.