The importance of early-day light for improved sleep | Matthew Walker

Our modern lifestyle – characterized by low light exposure during the day and high light exposure during the evening and nighttime hours – has dramatic effects on circadian rhythms and, ultimately, our ability to fall asleep and stay asleep. The key to restoring those rhythms to their natural, healthy patterns may be as simple as making small changes that alter the amount and timing of our exposure to light. In particular, exposure to 30 to 40 minutes of bright light, early in the day, and exposure to lower light during the afternoon and evening hours can reset our internal clocks and improve our sleep. In this clip, Dr. Matthew Walker explains how altering the timing and duration of daytime light exposure influences sleep.

This clip was taken from the FoundMyFitness interview with Dr. Matt Walker found at

Original episode published on Feb 28, 2019
🙇‍♀️ #Sleep #Cancer #Alzheimers 🧠

About FoundMyFitness: Rhonda Patrick has a Ph.D. in biomedical science from the University of Tennessee Health Science Center, and St. Jude Children’s Research Hospital. She also has a Bachelor’s of Science degree in biochemistry/chemistry from the University of California. She has done extensive research on aging, cancer, and nutrition.

It is Dr. Patrick’s goal to challenge the status quo and encourage the wider public to think about health and longevity using a proactive, preventative approach.

Learn more about Dr. Rhonda Patrick and her mission for FoundMyFitness at

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