Your Liver Clock Controls Your Muscle Energy (Even If You Sleep “Fine”)

The Energy Code · Mar 13, 2026 · 23m

Most people think circadian rhythm is just sleep hygiene. This deep dive shows it’s metabolic infrastructure. In a hepatocyte-specific BMAL1 knockout mouse model, skeletal muscle clock genes kept oscillating — but a huge slice of muscle metabolic rhythms didn’t. Roughly 1/3 of rhythmic muscle genes were re-tuned when the liver clock was disrupted, and the biggest hit landed on mitochondrial respiration: over half of oscillatory oxidative phosphorylation genes changed. Even more compelling, serum transfer experiments showed the liver clock helps deliver a nighttime endocrine “upshift” signal…