WHOOP Podcast How Meal Timing Affects Sleep & Metabolism with Circadian Rhythm Expert Dr. Satchin Panda
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Aug 20, 2025 
Dr. Satchin Panda is a renowned circadian rhythm researcher who reveals how our bodies operate on multiple internal clocks. He discusses the powerful impact of meal timing on sleep and metabolism, emphasizing the benefits of time-restricted eating. Dr. Panda explains how our peripheral clocks, particularly in the liver, are more sensitive to meal timing than previously thought. He also shares practical strategies for optimizing light exposure and nightly routines to enhance sleep quality and overall health. Discover how aligning your habits can transform your well-being!
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Body Clocks Beyond The Brain
- Nearly every cell has its own clock and food timing can reset peripheral clocks independently of the brain clock.
- Feeding mice during their inactive phase shifted liver rhythms and desynchronized the body's clocks.
Daytime-Feeding Experiment In Mice
- Panda describes feeding nocturnal mice during daytime to mimic night-shift eating.
- That experiment revealed peripheral organs followed feeding times, not the brain's light-driven clock.
Light, Sleep, And Food Decisions
- Light influences eating indirectly: excess night light delays sleep and worsens next-day food decisions.
- Poor sleep undermines self-control, leading to worse eating timing and choices that disturb circadian alignment.