BMR vs RMR: Measured Metabolism or a Formula Estimate?
Understand measured BMR, measured RMR and predicted resting energy. See the Mifflin–St Jeor formula, a checked example and limits of activity estimates.
Learn what common health and fitness estimates measure, how their formulas work, and where their limits matter. Start with the BMR calculator, protein requirement calculator, or BMI calculator. These tools support general understanding and do not diagnose conditions or replace individual clinical advice.
Understand measured BMR, measured RMR and predicted resting energy. See the Mifflin–St Jeor formula, a checked example and limits of activity estimates.
Compare older-adult protein guidance and weight-based examples. Understand the over-65 evidence, kidney-disease caveats and limits of calculator presets.
There’s a number floating around every diet forum: eat 1,200 calories and the weight comes off. It’s wrong for almost everyone who repeats it, because a calorie target that isn’t built from your own m…
“Drink eight glasses a day” is the most repeated hydration advice in the world and one of the least defensible. It ignores that a 55 kg office worker in Manchester and a 95 kg labourer in Lahore have …
Yes, and it’s more dangerous than most people realize, even though it’s far rarer than dehydration. Drinking water faster than your kidneys can process it dilutes the sodium in your blood, a condition…
Two people can carry the exact same amount of body fat and face meaningfully different health risks, purely based on where that fat sits. Fat around the belly – the “apple” pattern – behaves different…
Protein has an odd reputation problem: recommended everywhere for muscle and satiety, quietly feared by some as hard on the kidneys or bad for bones. For someone with healthy kidneys, most of that fea…
Naegele’s rule, the standard due date formula, assumes you don’t know exactly when conception happened – so it works backward from your last period and guesses. IVF removes that guesswork entirely. Wh…
Standard ovulation calculators run on one assumption: that your cycle length is consistent enough for calendar math to work. Subtract 14 days from your next expected period, count back five more, and …
There’s a real answer to this and a marketing answer, and they’re not the same number. The marketing answer is whatever a plan needs to sell itself. The real answer, based on how the body actually los…