Cardio
VO₂ trend · the cardio gate · Zone-2 & interval history
VO₂max (latest)
—mL/kg/min
VO₂ change
—
across series
Z2 sessions
1
4×4 unlocked
No
VO₂max trend
from the HealthDaily mirror (DESIGN.md §7.4)
No VO₂ data yet
Sync Apple Health VO₂max estimates and the trend renders here.
Cardio gate
the Norwegian 4×4 unlocks when recovery criteria are met (DESIGN.md §7.4)
Interval mode is LOCKED — stay on Zone-2 base. Unlocks when: sleep ≥ 6.5h on 0/5 required nights (need 5); HRV 7-day avg not yet available (need ≥ 23). (Anti-crash rule: intervals spike cortisol — earn the intensity.)
○Sleep ≥ 6.5h on 5 of 7 nights
0.0 / 5.0○HRV 7-day average ≥ 23
— / 23.0Interval sessions
4×4 & high-intensity
Jun 22Interval 4x4
30m
Zone-2 sessions
aerobic base
Jun 22Stairmill
20m