The Journal.
Every essay, review, field note, and interview we've published. New pieces arrive on Tuesdays; full issues close every three months.
I Tested Eight Pillow Cleaning Methods. The Whitest Pillow Was Not the Cleanest One.
Almost every viral hack I tried made a pillow whiter. Almost none of them made it cleaner. Those are two separate problems, and somewhere in the last few years of scroll-optimised laundry content they…
The Classified Listing Said "Works Great": What a Used CPAP Machine Can and Can't Tell You
I bought a $29 pulse oximeter because of a classified listing. Three lines in the county swap column, sitting between a chainsaw and a load of seasoned oak: CPAP/BIPAP machine. Works great. $150.
Two Smart Rings, 40 Nights, One Afternoon Coffee: The RingConn Gen 3 Review
The claim you have heard, probably from someone holding their phone at brunch: buy one of the good smart rings, drink your coffee too late, and the app will hand you the bill in the morning. A score.
Sleep Apnea Market Sizing Is Measuring the Wrong Population
Alternative sleep apnea therapies are not taking share from CPAP. They are being sold, for the most part, into the far larger population that CPAP never held — and most published sleep apnea market…
Samsung Health AI Features vs. My Sleep Data: Six Weeks Trying to Get It Back
Here is the question I could not stop turning over, somewhere around the fourth night of sleeping in a watch: if I let Samsung Health AI features grade my sleep every night, whose sleep is it…
The 3 a.m. Question: When Sleep Patterns Are Worth Telling a Doctor About
At 3:07 in the morning you are awake, and the question arrives fully formed: is this a problem? Not the tiredness — you've made a kind of peace with the tiredness.
Insomnia Redefined: What a Sleep Clinician Told Me About My 41 Awake Minutes
At 2:40 on a Tuesday I drank a cortado — one shot, about 130 milligrams of caffeine — because the four-year-old had been up at 4:50. I went to bed at 10:50, fell asleep fast, surfaced once around 3.
The Breastfeeding Benefits That Survive a Randomized Trial
The largest randomized trial of infant feeding ever conducted found no effect on childhood obesity. None at six years, none at eleven, none at sixteen.
Daylight Saving Time Isn't the Problem. Dark Mornings Are.
Every March the coverage arrives on schedule. Heart attacks tick up in the days after the country springs forward.
Three IQ Points: What the Evidence on Breastfeeding Benefits and Brain Development Actually Shows
The number is 3.44. That is the IQ advantage usually attributed to breastfed children, and it is the single figure doing most of the work whenever breastfeeding benefits and brain development come up…