@David_Bannister Thank you so much for your reply. Looking carefully on the graph with the proper Y scale, my readiness score as fluctuate significantly as well!
@hdkiller you should take this information into account:
HRV4Training provides a readiness score as an absolute value derived from a proprietary model. The scale is not standardized across users and does not naturally map to a 1–100 percentage range. In practice, each athlete’s score floats within a relatively narrow and individual band (e.g., 6.8–8.0 in my case).
Coach Watt, however, interprets readiness as a percentage (1–100), implicitly assuming that the input is already normalized and comparable across users.
The issue is that feeding the raw HRV4Training value directly into CW creates a semantic mismatch. A score of 7.6 has no intrinsic meaning in a 1–100 framework unless it is first normalized relative to that athlete’s historical distribution.
To make the metric usable for CW, the HRV readiness score should be normalized at the athlete level before being treated as a percentage.
