I tracked my sleep for 30 days. Not just hours. Quality. Deep sleep percentage. REM cycles. Wake events. My watch gave me a "sleep score" every mornin...
Why My Sleep Tracker Lied to Me Every Night of the Boulder Heat Wave Dr. Sarah Mitchell At 3:14 AM last Wednesday, I was staring at the ceiling of my ...
The alarm went off at 4:47 AM because 5:00 felt too round, too obvious, too much like giving up. I had read the books. I had watched the YouTube video...
Why My 7-Year-Old Outsmarted My Sleep Routine (And What I Did About It) It was 9:47 PM on a Tuesday in Boulder, and Leo was still awake. Not just awak...
I Tracked My Sleep for 847 Mornings. Then I Ruined It With One Bad Decision. I am an idiot. I need to say that first, because what I'm about to tell y...
I had been waking up to a blaring alarm for fifteen years. Then I learned what happens when you interrupt deep sleep.
No wearable? No problem. A pen, paper, and 7 days of patience is all you need to find your natural cycle length.
Deep sleep comes first. REM comes later. Interrupt the order and you wake up feeling like a zombie.
20 minutes or 90 minutes. Nothing in between. Here is the exact science of napping without grogginess.
One app said I got 8.2 hours. Another said 6.4. I wore a polysomnography headband to find the truth.
Start adjusting three days before your flight. Here is the exact light exposure schedule for east vs west travel.
I napped for 90 minutes every day for a month. Then I tried 20 minutes. The data was shocking.
Your body wants to sleep because it is tired. Your brain wants to sleep because it is dark. They do not always agree.
Most people are sleep-bankrupt. Track your debt for 7 days and see exactly how much sleep you owe.
Your fitness watch gave you a sleep score of 82. Do you know what that actually means? Probably not.
Eight hundred and forty-seven mornings. That is not a typo. I literally tracked every single wake-up for over two years.
Stop trying to go to bed earlier. You are doing it backwards. The 15-minute rule is the only thing that works.
Did you spend three thousand dollars on a mattress because a salesperson told you it would change your life?
I set six alarms. Every single morning. That is what Mark told me in his first session.
I am just not a morning person. That is what I said for thirty years. Then I did this experiment.
I used to set a thirty-minute nap alarm. I always woke up worse. Here is why, and how to fix it.
I will catch up on sleep when I am dead. That is what my brother texts me. Here is a realistic plan instead.
Who decided eight hours was the magic number? Let me guess — someone who never had kids.
Shift workers have a forty percent higher risk of sleep disorders. I talked to one who figured it out.
Landing at London Heathrow at 9 AM. Your body thinks it is 2 AM. Here is what you do before you even get off the plane.
I have a PhD in sleep. And I still spent the first six months of Leo's life waking up to a vibrating phone under my pillow.
I will sleep when I am dead. A text from my brother, 11 PM, last Tuesday. I did not respond. I was too tired to argue.