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VO2 max is one of the strongest lab measured predictors of all-cause mortality. Here is what the number is, how it compares to measured population data by age and sex, and what actually moves it.

Heart rate formulas give you a population average and ask you to train as if it were yours. Controlled trial data shows what the difference costs.

Cardiorespiratory fitness is one of the strongest predictors of all cause mortality yet measured. Here is the size of the effect and the caveats.

Your resting metabolic rate is the largest part of what you burn each day. What a measurement tells you that an equation cannot.

A stalled scale has three plausible explanations and they need opposite responses. Guessing wrong costs you weeks.

Basal and resting metabolic rate are measured under different conditions and the equations are labelled inconsistently. Here is what each one means.

A VO2 max of 42 means nothing on its own. Percentile tables for men and women by decade, and how to read your own row.

Your watch estimates VO2 max from heart rate and pace. Validation studies show the error grows as you get fitter.

The training that raises aerobic capacity is specific and the timeline is measurable. What to expect over twelve weeks.

Three acronyms describing three different quantities, each built on the one below it, each step adding a new source of error.

Predictive equations are built on population averages and most carry systematic bias, not just imprecision. Here is what that costs a fat loss phase.

The claim that dieting wrecks your metabolism is half true. The half that is true is more useful than the myth.

Low energy availability is more common than it looks and the signs are easy to dismiss. What a measured resting rate adds.

The test is easy. Getting a result that means something depends almost entirely on what you did in the hours before you arrived.

Two people with identical body fat percentages can carry very different metabolic risk. Where the fat sits is what separates them.

Peak bone mass arrives in your twenties. Most people first measure it after a fracture, four decades too late to act on.

Twelve good weeks can show up as 800 grams on the scale. What a body composition scan reports instead.

Up to one-quarter of weight loss can come from muscle, not fat. Learn why body composition matters more than the number on the scale, and how a DEXA scan reveals what is really happening.

A DEXA scan is the gold standard for measuring body fat, muscle mass, and bone density. Learn what to expect, how to prepare, and why it is more accurate than scales, calipers, or bioimpedance devices.

Nearly 1 in 5 women over 50 have osteoporosis. A DEXA bone density scan can detect bone loss years before a fracture. Learn who should get screened and what you can do to protect your bones.

DEXA scans are accurate to within 1-2% for body fat. InBody and other BIA devices carry a 3-15% margin of error that shifts with hydration, meals, and exercise. Here is what the research says and when each method makes sense.

A DEXA scan measures body fat percentage, lean muscle mass, bone mineral density, visceral fat, and regional fat distribution all in a single 10-minute scan. Here is exactly what each section of your report means.

DEXA body composition scans in Sydney typically cost between $99 and $299 depending on the clinic and whether a consultation is included. Here is what you should expect to pay and what to look for.

Understanding our bodies goes beyond just weight or BMI. To truly grasp our health and fitness, we need to dive deeper into detailed body composition metrics . These metrics reveal the proportions of fat, muscle, bone, and water in our bodies. This knowledge helps us make smarter decisions about nutrition, exercise, and overall wellness. In this post, we will explore the key components of body composition, the tools used to measure them, and how to interpret the results. We w