Data-driven articles to help you make smarter financial and health decisions — with free calculators built right in.
Most financial advisors recommend spending no more than 28% of gross income on housing. But in 2025 with elevated mortgage rates, that rule needs context. Here's the complete framework.
Read article →Fidelity recommends having 1× your salary saved by 30, 3× by 40, 6× by 50, and 8× by 60. We break down what these targets mean in dollar terms and how to catch up if you're behind.
Read article →With mortgage rates around 6.5–7%, paying extra toward principal has a guaranteed, tax-free return. But is it always the right move? We run the numbers.
Read article →The standard BMI chart was developed using mostly European data. Here's what researchers say about how BMI cutoffs apply (and sometimes don't) across different American populations.
Read article →The classic "3,500 calories = 1 pound" rule is oversimplified. We explain the actual metabolic math and why a personalized calorie deficit beats any generic formula.
Read article →The "8×8 rule" is a myth — sort of. We look at what the National Academies actually recommend and how your individual needs might vary significantly from the average.
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