A pound of muscle and a pound of fat both weigh a pound. But muscle takes up roughly 18% less space than fat, which is why the scale lies.
Recomposition: losing 5 lbs of fat and gaining 5 lbs of muscle leaves the scale flat but drops a full clothing size.
This is why photos and measurements beat weekly weigh-ins for tracking real progress.
Track waist, hips, thigh, and arm measurements monthly. Take progress photos in consistent lighting.
Estimate your body composition, not just weight.
Body Fat Calculator →
BMI can label muscular athletes as overweight or obese. Here's when BMI misses the mark and what to use instead.
The clearest waist guideline for women, based on the NHS and Ashwell Waist-to-Height ratio — no charts, just one rule.
How age changes your healthy weight range, and the simple WHO/CDC formula that answers "how much should I weigh?".