Body & Metrics

A measure of muscle mass relative to height.

The proportion of your body weight that is fat.

Your total weight minus fat mass — muscle, bone, organs, and water.

A weight-to-height ratio that ignores body composition.

Losing fat and building muscle at the same time.

A muscle-building phase run in a caloric surplus.

A fat-loss phase run in a caloric deficit while preserving muscle.

A simple ratio used to gauge fat distribution and health risk.

A body-fat estimate from how an electrical current passes through you.

A gold-standard body-composition scan measuring fat, muscle, and bone.

Consistent photos that track visual change the scale misses.

Body weight as measured by a scale — useful but noisy day to day.

Short-term weight changes driven by water, not fat or muscle.

Estimated healthy weight ranges based on height and frame.