Trainr Journal
Body Recomposition: Why the Scale Misses It
A 2026 EJAP trial shows fat loss and muscle gain happening together while the scale stays flat. Here's what the DXA data found and why it matters.
2026-09-15
Why Waist Circumference Predicts Health Better Than BMI
A large cohort study in PLOS ONE (2011) found waist circumference predicts mortality risk beyond what BMI shows. Here's what it found.
2026-09-15
How Much Muscle Runners Lose in a Marathon
A 2025 study measured runners before and after a marathon and ultramarathon. Muscle loss was minimal — most of the scale drop was water and fat.
2026-09-15
Progress Photos vs Measurements: What Tracks Change
A 2023 study compared photo-based 3D body scans to DXA. Here's what it found about tracking real change over weeks, not just snapshots.
2026-09-15