FatBurn

A single 0–100 number blending four inputs: how consistent your training load has been, how well you've recovered, how closely you've hit your nutrition targets, and how many days in a row you've shown up. It recalculates every night as new data comes in — move any one of the four and the score moves with it.

Calorie and macro targets come from your BMR (calories your body burns at rest, based on age, gender, height and weight) times an activity multiplier, then adjusted for your goal. BMI is a screening ratio of weight to height — a starting reference point, not a verdict.

Estimates how ready your body is to train hard today, using sleep quality, recent training load, and (when connected) wearable data like heart-rate variability. Lower readiness quietly trims today's volume; higher readiness is your cue to push.