Did you know? The Xert “Rainbow Gauge” is showing both intensity and fatigue in real time.
You will likely see this gauge throughout Xert (EBC app, Garmin data fields, Remote Player, etc.), here’s the quick way to read it:
1) Outer ring = HIE (your high-intensity "battery”)
- It drains when you ride hard (above TP)
- It refills when you ride easier (below TP)
2) Inner ring colors = intensity relative to your fitness signature (not power “zones”)
- Grey: well below LTP
- Blue: below LTP
- Green: LTP → TP
- Yellow: around TP (threshold is ~12 o’clock)
- Orange: ~3-minute power*
- Red: ~30-second power*
- Purple: MPA (your current “ceiling”)*
*These compress and expand dynamically as you fatigue and recover - so the colors reflect what you can do right now, not just what you can do when fresh.
Same power, different fatigue: as HIE is used, MPA drops and the purple ‘ceiling’ expands inward, compressing your sprint/VO₂ power towards FTP. Recover easy and the colors will spread back out.