MyBodyAI Encyclopedia

How MyBodyAI computes every number, what each card, button and switch does, and why. Every entry is checked against the app's code.

Getting started

How MyBodyAI works
What MyBodyAI is and is not, how your data become scores, your personal normal, measured and estimated numbers, and why a past day can change.
What MyBodyAI is, and what it is not From your device to your scores Your personal normal Measured and estimated Scores, words and colors The calculation version Why a past day can change The first days and weeks Privacy in one paragraph Where each question is answered
App tour
Every tab of MyBodyAI and what is on it, the day picker, the check-in, info buttons, Premium locks, and how phone, desktop and the Android app differ.
The shape of the app The day picker and past days The Overview, card by card The Health tab The Sleep tab The Activities tab The Performance tab The Trends tab The Progress tab The weekly report Info buttons and windows Sharing a picture of your day Free, Premium and the locks Settings and the rest of the menu

Data and devices

Devices and connections
Every way to connect: Garmin, Health Connect, Polar, Oura, Withings, COROS, Google Health and the Garmin watch app, with what each delivers, history and limits.
What you can connect How to connect What each connection delivers How far back history reaches How fast data arrive What a tick and a dot mean Several devices at once Disconnecting Free and Premium
Sync and fetching new data
How new data reach MyBodyAI, what “Fetch new data” and the Sync button do, what each message means, the limits, and why a past day can change.
How data arrive by themselves “Fetch new data”The Sync button in the header What each message means The limits The first sync after connecting Why a past day can change later The nightly catch-up Why two screens can differ for a few minutes What you can do
Several devices, one account
What happens when several devices describe the same day: which source wins per signal, measured or estimated, a missing night, zero versus no data.
One value, one source Which source is used Measured, estimated, entered A missing night Zero and no data Values that are refused What you can do
Troubleshooting data and connections
What to do when data do not arrive or stop: badges and banners, Health Connect permissions, Garmin history and export, Fitbit, the watch app, differing numbers.
Start here Badges and banners No data yet Data stopped Health Connect on Android Garmin: history and export Fitbit and Pixel Watch Numbers differ from the device's own app A session or a night is missing The Garmin watch app

Health

Body Status
How MyBodyAI decides your Body Status: five states, the dial, which signals count, the night rule, what changes it during the day and what you can do.
What Body Status is The order of the checks The night rule The number on the dial What the card shows around the state When it updates Free and Premium Energy pacing mode What you can do
Morning Energy and the energy map
What Morning Energy is, where the number comes from (Garmin, Oura or our estimate), how your usual is learned, and how the daily energy map is built.
What Morning Energy is A Garmin watch: Body Battery at waking An Oura ring: Readiness Everyone else: the estimate Your usual, and what "low" means What reads Morning Energy The daily energy map When it updates Energy pacing mode Free and Premium What you can do
Recovery and Training Readiness
How MyBodyAI computes Recovery and Training Readiness: every part and weight, the windows, the sleep rules, the zones, what is missing when, and what to do.
Recovery and Training Readiness side by side Recovery Training Readiness When they update Free and Premium Energy pacing mode What you can do
HRV, resting heart rate and the Nervous System
How MyBodyAI reads your overnight HRV and resting heart rate: weekly mean, your own band, Nervous System, Cardiac Fitness and vascular age.
What this page covers Overnight HRV Resting heart rate Nervous System Cardiac Fitness Vascular age Age and sex in all of this When it updates Free and Premium Energy pacing mode What you can do
Stress Load and daytime stress
How MyBodyAI builds Stress Load from your device's stress readings, Body Battery and sleep, where stress comes from on each device, and what moves it.
What Stress Load is Where you see it Where stress readings come from How Stress Load is built What the number does Daytime stress in the app What changes it When it updates Free and Premium Energy pacing mode What you can do
Body Alert, Immunity, Breathing and safety alerts
What Body Alert, Immunity and Breathing read from your device, how skin temperature, blood oxygen and your check-in count, and which safety alerts you can see.
What these indices are Body Alert Immunity Breathing Skin temperature Are you feeling ill? The check-in Safety alerts When it updates Free and Premium Energy pacing mode What to do
Biological age
How MyBodyAI works out your biological age from six domains, which readings and studies each one uses, why it moves, and what is Premium.
What it is and what it is not How the number is built The six domains What you need to see a number The radar, the trend and What if Why it moves When it updates Younger than you came Free and Premium Energy pacing mode What you can do

Sleep

Sleep Quality and the Sleep tab
How MyBodyAI computes Sleep Quality: every part and weight, stage targets by age and sex, what counts as a night, naps, missing stages and the Sleep tab.
What Sleep Quality is What goes into the score Sleep stages What counts as a night Naps When the device sends no score The Sleep tab, card by card The word and the bars When it updates Free and Premium Energy pacing mode What you can do
Sleep need, Sleep Debt and Body Clock
How MyBodyAI sets your sleep need, counts Sleep Debt, scores Body Clock regularity and advises a bedtime: every input, window, limit and example.
The three ideas in short Where you see them Your sleep need Sleep Debt Tonight's goal and the bedtime advice Body Clock Week and weekend When these update Free and Premium Energy pacing mode What you can do

Training

Heart-rate zones
How MyBodyAI cuts your five heart-rate zones from your heart-rate reserve, which resting rate and maximum it uses, and what changes them.
The five zones How each zone's limits are worked out What changes your zones, and what does not Where you see the zones When there is no heart rate, no maximum, or power The website calculator
Training load
How MyBodyAI measures training load: the heart-rate impulse of a session, Fatigue, Fitness and Form, Load vs. usual, Overtraining and Training Balance.
Four numbers, four questions The impulse of one session Fatigue, Fitness and Form Load vs. usual Overtraining Training Balance Intensity: low, moderate, high Hard sessions and what they change A week without an easy day
Training plan
How MyBodyAI builds your weekly training plan from the goal you choose and your own habit: minutes, ramp, path to the goal, race taper and what pauses it.
What the plan is Goals and levels The minutes the plan counts Your habit This week's step The path to the goal The week First weeks of a habit Why today looks as it does Illness, a break and energy pacing A race Under 18 and over 65 Setting your goal
Daily coach
How "Today's move" chooses your session: the verb of the day, sport and length from your history, the 30-day cap, weather and rain, and the picker "Other".
What the card shows The verb of the day How the session is chosen Weather and rain Choosing another activity The hour of the day The week on the coach card The race taper Energy pacing
Activities
What the Activities tab shows and how it counts: the session list, what is a session, pulse chart, zones, sports, route map and its blur, and active minutes.
The Activities tab The session list One session in detail The route map Activity distribution Time in zones Active minutes and the WHO guideline Premium, energy pacing and what is hidden

Modes and account

Energy pacing
What the energy pacing mode is, who it is for, how the heart-rate ceiling works, what it hides, how a crash differs from illness, and the missions.
Who it is for Switching it on The heart-rate ceiling The chart and the three bands What makes the day a day of rest A crash is not an illness What changes in the app Missions and badges Free and Premium
Progress, levels, badges and class
How the Progress tab works: XP and ranks, daily missions, streaks, badge families, your class and its stages, and what energy pacing and the free plan change.
What the Progress tab holds The top of the tab The four tiles How XP is earned Ranks Today's missions Your class Badges Streaks Why a number on this tab moves Energy pacing mode Free and Premium
Plans, trial and prices
What the free plan and Premium include, how the 7-day trial starts, prices today and from 1 January 2027, paying, canceling, and what happens when Premium ends.
What the free plan keeps What Premium adds The 7-day free trial Prices Paying Managing your subscription When Premium ends Founder, tester and beta accounts Changes to the plans
Privacy and your data
Where your data live, who can see them, how to export or delete everything, inactive accounts, consents, passkeys and devices, cookies, and what we never do.
Where your data are kept Who can see what Export your data Deleting your account Inactive accounts Consents Sign-in, passkeys and devices Cookies and analytics What we do not do
E-mails, notifications, widgets and the watch app
Which e-mails and push notifications we send and when, the weekly report, the Android widgets and tiles, and the Garmin watch app with its pairing code.
Where the switches are E-mails The weekly report in the app Push notifications Android widgets and tiles The Garmin watch app
Settings, section by section
Every section of Settings in order, each field and switch, its default and range, what it changes, and where in the Encyclopedia that effect is explained.
How Settings is laid out General Profile Location for weather Goals Devices Notifications Account & security Subscription Data & privacy Contact

Looking for a general definition (what HRV is, what sleep stages are)? See the health glossary.

MyBodyAI is a wellness app, not a medical device. It does not diagnose. If you feel unwell, ask a doctor.