Troubleshooting library
Start with what looks wrong
Readiness stuck at 1? Body Battery not charging? Zones obviously off? Pick the symptom and work through the likely causes in order.
Every guide separates a broken setting from a number that is working as designed. If the metric itself looks doubtful, check the research.
verified guides15
problem groups3
accounts required0
A score is acting up
The "why is my watch doing this" pages: symptom first, causes ranked, fixes with a realistic timeline.
- Garmin Training Readiness Always Low or Stuck at 1? 6 Fixes That WorkStuck at 1, or always low when you feel fine? The inputs Garmin uses, which one is usually the culprit, and six fixes with a realistic timeline for each.
- Garmin Body Battery Not Charging Overnight (or Stuck at 5)? Here's WhyStuck at 5, not charging overnight, or draining too fast? The three failure patterns, what each one means, and the five fixes that restore accuracy.
- Garmin Recovery Time Way Too High? Here's What's Going OnYour Garmin says you need 72 hours of recovery after an easy run? Here's why recovery time overshoots and how to calibrate it for better accuracy.
- Garmin Training Load Too High: Causes and How to Fix ItWhy Garmin keeps flagging your training load as too high, what the algorithm actually measures, and how to tell real overreaching from a misread metric.
- Why Your Garmin VO2 Max Is Wrong (And How to Fix It)Your Garmin VO2 max seems too high, too low, or stuck? Here's exactly how the estimate works, why it goes wrong, and 6 ways to improve accuracy.
- Garmin HRV Status: Why It Says 'Low' When You Feel FineHow Garmin computes HRV status, why it flags low after alcohol or poor sleep, when the warning is real, and when the watch is more honest than how you feel.
- Garmin Stress Score Explained: What It Means and Why It's Always HighYour Garmin stress score seems stuck at high levels? Learn exactly how stress tracking works, what causes elevated readings, and when to actually worry.
Set it up properly
The defaults are wrong for most people. Zones, VO2 max inputs, and readable charts.
- How to Set Garmin Heart Rate Zones (the Defaults Are Wrong for Most)Garmin defaults to 220-minus-age, which can miss your real max by 20 bpm. How to set heart rate zones from your own data, and when not to trust one test.
- How to Improve Your Garmin VO2 Max (Without Gaming the System)Your Garmin VO2 max is stuck or declining? Here are 7 evidence-based ways to genuinely improve it, and why gaming the number is counterproductive.
- Why Garmin Connect Charts Are So Hard to Read, and What to DoGarmin Connect buries your training data in tiny, disconnected charts with no overlays or correlation views. Why the UX is broken, and what better looks like.
Example: age 40, max 180 bpm (220 − age) - Zone 5
- 162–180
- Zone 4
- 144–162
- Zone 3
- 126–144
- Zone 2
- 108–126
- Zone 1
- 90–108
Running and Cycling · 1 min · Free
Heart-rate zones
Where does easy actually end?
- You bring
- Age, or max and resting heart rate
- You get
- Five zones on three models
Get your data out
Every export path, verified against vendor documentation — and what each brand quietly keeps.
- How to Export Garmin Data: FIT, CSV, or the Full ArchiveThree ways to get your data out of Garmin Connect: single FIT files, CSV, and the full bulk archive. Plus the three things the export quietly leaves out.
- How to Export Your Polar Data (and What Polar Leaves Out)Polar Flow exports sessions as TCX, CSV, FIT or GPX. The full account archive at account.polar.com is JSON, and Polar states it excludes sleep and activity data.
- How to Export Your Suunto Data — and What It Leaves OutSuunto exports workouts as FIT or GPX, one at a time, from the three-dot menu. There is no documented bulk export. Every route out, and what never makes it.
- How to Export Your COROS Data — and What COROS Leaves OutCOROS exports one activity as FIT, GPX, TCX or KML, and your whole history as FIT or TCX from Training Hub. Sleep, HRV and daily data need a support ticket.
- How to Export Your Whoop Data — and What Whoop Leaves OutWhoop exports your history as CSV files emailed from the app. There is no FIT or GPX file, no raw signal, and no way to check how a Recovery score was built.