A recovery score should protect balance, not reward extremes.
daygauge treats recovery as a proxy built from personal baselines, not a diagnosis or a command to train harder.
Start with the signal your own data can support.
Fitness recovery scores are popular because users want to know whether to push or ease off.
The risk is false certainty. HRV and resting heart rate are useful trend signals, but they are noisy and need sleep, load and personal baseline context.
daygauge combines sleep timing, active minutes, resting heart rate, HRV and recent output to decide whether the day should be moderate.
What this page covers.
From research context to product evidence.
What a user should expect to see in the app.
Output is up while recovery proxy is softer: active minutes +18, resting HR +3 bpm, HRV -7 ms.
Weekly review previewdaygauge combines sleep timing, active minutes, resting heart rate, HRV and recent output to decide whether the day should be moderate.
Confidence rises when the same pattern repeats against your own baseline and drops when key signals are missing.
daygauge would suggest one small experiment, then watch whether the evidence repeats over the next week.
Research context only. daygauge does not diagnose, treat, prevent or predict disease risk. Personal medical concerns belong with a qualified clinician.
Evidence 1
Output is up while recovery proxy is softer: active minutes +18, resting HR +3 bpm, HRV -7 ms.
Evidence 2
Anti-overexertion cap applied: high movement did not fully count because recovery was below baseline.
Evidence 3
Suggested action: keep today's quest light and stop at the planned effort cap.
Safety line
Research context only. daygauge does not diagnose, treat, prevent or predict disease risk. Personal medical concerns belong with a qualified clinician.
Sources daygauge can cite without overclaiming.
These sources are used as context for product wording and evidence labels. They should not be turned into personal disease-risk estimates.
- PLOS ONE 2024 physical activity and HRV meta-analysis
- 2025 sleep deprivation and HRV meta-analysis
- 2024 resting heart rate and physical activity cohort
Research context only. daygauge does not diagnose, treat, prevent or predict disease risk. Personal medical concerns belong with a qualified clinician.
What daygauge should not claim.
Related daygauge guides.
Want daygauge to explain recovery scoring in your own data?
Join the TestFlight waitlist and tell us which pattern you want daygauge to explain first.
iOS TestFlight first · paid app, one plan · evidence context, not medical advice