How Much Water Should You Drink? What the Evidence Actually Shows
When is thirst enough, and when does more water help?
Selected research
Four investigations worth starting with
Can a Country Make You Happier? What Rankings Miss
What happiness rankings measure, and what they leave out.
What Actually Changes When You Move Abroad? Interactive Calculator
Compare purchasing power, well-being, health and relocation trade-offs.
Coffee Can Follow You Into Sleep
How caffeine changes sleep, even when you fall asleep easily.
All articles
Long after harvest, an apple keeps consuming oxygen. So does a blueberry, at almost the same rate in the cold. Why does one last months and the other weeks?
We compared laboratory food tests with portions people actually eat. The cadmium comparison reverses. Other results become misleading unless you know which chemical was measured. Explore the Food Market Atlas.
Three blood-pressure readings, one person, two different labels. Our reanalysis of 6,100 US adults found category changes in about one in six cases. What actually changed?
Workers in some occupations live years longer than those in others. French life tables and original Spanish mortality calculations show the differences, and what they do not prove about the effects of work.
Falling asleep easily does not tell you everything about coffee’s effect on your night. Dose and timing…
A country ranking compares residents; migration changes the environment around the same person. What travels with you, what changes quickly, and what only partly adapts?
Electrolyte drinks can change short-term fluid retention. But do healthy adults benefit from drinking them every day? We followed the evidence.
Breakfast at 10 a.m. may be early for one person and late for another. Three different clocks tell three different stories. Which one actually matters for health?
In one international study, Egypt ranked 21st out of 22 countries when people were asked to place…
We started with a simple question: is thirst enough, or should healthy people deliberately drink more water?…
Does mouth taping improve sleep or breathing? Small studies suggest a possible benefit in selected people with mild sleep apnea, but evidence in healthy adults is sparse and mouth closure can worsen airflow in some obstructed sleepers.
Does white or pink noise really improve sleep? Research suggests the main benefit may be masking disruptive sounds rather than directly improving sleep itself.
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