Body Composition

Body composition tells you what your body weight is made of: fat mass, muscle mass, bone mass, and water. Two people of the same weight and height can look completely different - one firm and muscular, the other soft. The difference is body composition. This is why staring at the scale alone gives a misleading picture of progress.

The real goal of weight management is usually improving body composition: reducing fat mass and maintaining or increasing muscle mass. This is called body recomposition. It's especially possible for beginners and overweight individuals, who can simultaneously lose fat and build muscle with sufficient protein and resistance training.

Body composition can be measured using several methods. DEXA scanning is the most accurate (1-2% margin of error), but costs 50-150 euros. A bioimpedance scale is a home-friendly alternative, but its accuracy varies based on hydration and other factors - it's best used for tracking changes, not measuring absolute numbers. Skinfold measurement requires a skilled tester.

At home, the best body composition tracking methods are waist circumference, photos taken under the same conditions (lighting, time of day), and how clothes fit. If your clothes are fitting better but the scale isn't moving, you're likely losing fat and building muscle - which is an excellent result. Body composition is directly related to body fat percentage, BMI, and muscle mass concepts.

Last updated: March 30, 2026