Add your weight and one more row opens — and it is a different row depending on who is asking. A man gets his FFMI: how much lean mass he carries for his height. A woman gets waist-to-hip against the WHO's thresholds, because a 2024 meta-analysis over 709,000 people found that ratio's link to heart-attack risk is stronger in women than in men. Not two versions of the same screen. Two questions worth asking. #facts