Body-recomposition

Body recomposition — simultaneously losing fat and gaining muscle — is physiologically possible but context-dependent. This article examines who can achieve it, the evidence base, the required conditions, and realistic expectations.

Weight loss and muscle building are physiologically distinct processes with partially competing requirements. This article explains the underlying mechanisms, when they can occur simultaneously, and how to structure diet and training when pursuing each goal.

Weight loss and weight gain are governed by the same energy balance principle but have distinct physiological and hormonal characteristics. This article reviews the mechanisms of each, how body composition changes differ between conditions, and when both can occur simultaneously.

Losing measurements while the scale stays flat is one of the most positive outcomes in body composition change — it means simultaneous fat loss and muscle gain. Here is the biology, why it happens, and how to maximise it.

Simultaneously reducing fat while preserving or gaining lean mass — body recomposition — is the primary goal of most physique-focused diets. This article covers the evidence hierarchy for supplements that specifically support lean mass retention during a caloric deficit: protein, creatine, HMB, omega-3, and vitamin D, with effect sizes, mechanisms, and practical protocols.