How Light, Exercise, and Sleep Fuel Your Metabolism


Metabolic health is the engine that powers your body. From gut and liver function to screen time and sunlight, discover the keys to building lasting resilience.
Dave Asprey, creator of the biohacking movement and Bulletproof Coffee, envisions a future where we treat light like a drug—dimming it after dark in homes, stores, and airports. He imagines gentle, supportive lighting replacing harsh glares, creating environments that align with our biology and support our health, instead of disrupting it.
Asprey may be onto something. Metabolic health isn’t just about what’s on your plate. He credits controlling his light exposure and syncing with natural cycles for restoring his metabolism. By adopting simple habits such as sleeping in a pitch-black room and going outside first thing in the morning, he shifted from being a lifelong night owl to an early riser—and lost weight—proving that lifestyle adjustments can have powerful effects.
We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.Rethinking ‘Normal’: What True Metabolic Health Looks LikeThe Liver’s Vital Role: The Powerhouse of Metabolic HealthHow Gut Bacteria Shape Energy, Cravings, and WeightHow Light, Exercise, and Sleep Fuel Your Metabolism