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Body Score is a Burn product score out of 100, built from your own day: your fast, your sleep, your water, your steps, and how consistent your start times are. It tells you which part is holding it back.
It is a way to read your day at a glance, not a health or metabolic measurement.
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What makes up the score
Sleep and Activity come from Apple Health. Connect it and the score covers all five, with the points available for each shown below.
Fasting
How far through your window you are
Sleep
From Apple Health
Hydration
Glasses of water logged today
Activity
Steps, from Apple Health
Consistency
Whether you start at similar times
Without Apple Health, Burn scores the three it can see on its own: Fasting out of 50, Hydration out of 25, and Consistency out of 25.
What it is for
Fasting produces a lot of separate numbers: hours, water, start times. Body Score puts today's into one figure, so you can tell how the day is going without reading three panels.
A fast in progress, water logged, and steps taken all push it up. Because it is built from your own day, the direction matters more than the number.
Every part is scored separately, and the sheet names the one that cost you most. A low score comes with a reason attached.
It sits on the fast screen below the start button, with a 30-day trend chart inside the sheet itself.
What Body Score is
Burn names this precisely because the name matters. Body Score describes your own day, using what you log in Burn and what Apple Health provides. It is not a clinical or metabolic measurement.
It reads the fasts and water you have logged, plus sleep and steps if you connect Apple Health. Nothing is borrowed from anyone else's data, and no benchmark is implied.
It is not a health score, not a metabolic score, and not a clinical measurement. It does not diagnose anything and it is not medical advice.
Burn maps elapsed time to named stages and does not measure ketosis, autophagy, or metabolic state. Body Score follows the same rule: it describes what you did, not what your cells are doing.
Alongside it
Body Score is a summary. When you want the detail, it is in the Journal and Insights tabs: your hours, your streak, your records, your water and weight, and the patterns Burn has found in them.
Every fast by day, week, and month, with energy, mood, water, and weight next to the hours.
Patterns written as sentences, with the arithmetic shown rather than hidden behind a score.
Your stats
Journal, Days view
Insights
Any single day can be low. The 30-day trend inside the sheet is where it starts telling you something. Start tonight.
Download free on the App StoreiPhone, iPad, and Apple Watch. Requires iOS 18 or watchOS 11.