Peripheral clocks and Daylight Saving

Human timekeeping is distributed: nearly every organ has its own molecular clock that can fall out of sync with the brain's master clock. Short, policy‑driven time shifts (like Daylight Saving Time) therefore produce systemic misalignment across organs, not just an hour of lost sleep. — Daylight Saving and other scheduling policies should be evaluated for multi‑organ circadian disruption and measured health impacts, not only convenience or energy arguments.