Your Body Doesn't Wake at 3AM by Accident
The 3am wake-up isn't bad luck or a broken habit. It's your cortisol awakening response arriving early, and there's a reason it's arriving at all.
Read more →The Morning Letter
The Morning Letter
Sleep science, nervous system recovery, and the honest account of what actually works. Written weekly for the people who are tired of being tired.
The Difference Between Stillness and Rest, Explained
Stillness and rest aren't the same thing. Here's what the research on heart rate variability says about why your body can stay "on" even when you'v...
Read more →What Matthew Walker's Sleep Research Actually Means for People Who Can't Sleep
Matthew Walker is Professor of Neuroscience and Psychology at UC Berkeley. His 2017 book Why We Sleep synthesised decades of sleep research for a g...
Read more →Why You Wake Up at 3am (Even When You're Exhausted)
If you are waking at 3am and cannot get back to sleep, the cause is almost always one of two things: a natural trough in your sleep cycle that coin...
Read more →Your Body Isn't Broken. It's Just Confused About Time.
The reason you're exhausted at 10 p.m. and awake at midnight isn't a sleep problem. It's a cortisol problem — and the two are not the same thing.
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