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Where the three-to-six-month emergency fund rule actually came from
The most repeated number in personal finance was set in 1996 by polling 156 advisers. Six million households of bank data suggest a very different answer.
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No Sleep Guideline Anywhere Says Eight Hours
The official number is "seven or more" — a floor with no ceiling. When researchers measured sleep in three societies without electric light, every group averaged under seven.
Health
The latte factor gets the arithmetic right and the mechanism wrong
His sum checks out to the dollar. But 85% of people are passive savers who ignore price incentives, and financial education explains 0.1% of the variance in behaviour.
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What ‘just go for a walk’ leaves out
The evidence on exercise and depression is weaker than the headlines and more interesting than the sceptics allow. It points at structure and supervision, not walks.
Where the three-to-six-month emergency fund rule actually came from
The most repeated number in personal finance was set in 1996 by polling 156 advisers. Six million households of bank data suggest a very different answer.
Learning Styles: The Experiment That Would Settle It Has Almost Never Been Run
You are not a visual learner or an auditory learner. The claim has a precise testable form, a required study design, and a research literature that overwhelmingly endorses it without using that design.
No Sleep Guideline Anywhere Says Eight Hours
The official number is "seven or more" — a floor with no ceiling. When researchers measured sleep in three societies without electric light, every group averaged under seven.
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What ‘just go for a walk’ leaves out
The evidence on exercise and depression is weaker than the headlines and more interesting than the sceptics allow. It points at structure and supervision, not walks.
The Vitamin D Trials Nobody Talks About
Two of the largest supplement trials ever run found almost nothing. Then the Endocrine Society withdrew the threshold that made half the country deficient in the first place.
Stretching Barely Prevents Injuries. Strength Training Cuts Them by Two Thirds.
A meta-analysis of 26,000 participants ranked the injury-prevention strategies head to head. The one everybody does came last. The one almost nobody does came first, by a mile.
Your Metabolism Does Not Slow Down at 30. It Holds Steady Until 63.
A study of 6,421 people across 29 countries mapped human energy expenditure from eight days old to 95. It found four life phases. None of them begins at 30.
The latte factor gets the arithmetic right and the mechanism wrong
His sum checks out to the dollar. But 85% of people are passive savers who ignore price incentives, and financial education explains 0.1% of the variance in behaviour.
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Nobody Is Left-Brained. The Man Who Won the Nobel for Split...
A study of 1,011 brains looked for people whose left or right hemisphere ran stronger overall. It found lateralised functions everywhere and lateralised people nowhere.
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No Sleep Guideline Anywhere Says Eight Hours
The official number is "seven or more" — a floor with no ceiling. When researchers measured sleep in three societies without electric light, every group averaged under seven.
Your Metabolism Does Not Slow Down at 30. It Holds Steady Until 63.
A study of 6,421 people across 29 countries mapped human energy expenditure from eight days old to 95. It found four life phases. None of them begins at 30.
In 1998 Millions of Americans Became Overweight Overnight. Nobody Gained Weight.
BMI was named in 1972, in a study of 7,424 men, as a tool for comparing populations. Twenty-six years later a committee moved one number and changed who counted as healthy.