Advanced analytics
Correlation Lab
Next-Day Readiness vs Zone 4–5 Minutes
Y: Oura · X: Polar
Coefficient (r)
-0.07
Direction
Negative
Sample size
14 days
Date range
2026-08-03 → 2026-08-16
There is little to no linear relationship between Zone 4–5 Minutes and Next-Day Readiness in this window.
Saved Comparisons
Correlation does not establish causation. Sample sizes here are short-window and intended to guide staff conversations, not to justify clinical decisions.