HRV · Autonomic · Sleep

The Science

The Nexus Score is built on established neurophysiological biomarkers — not wellness trends or subjective wellbeing surveys. It combines measurable inputs commonly used in performance monitoring and recovery assessment to guide personalised recovery protocols.

What the Nexus Score measures.

◎

Heart Rate Variability (HRV)

The primary marker of autonomic nervous system balance. High HRV correlates with strong recovery capacity. Low HRV signals accumulated stress, poor sleep, or overtraining. Measured at rest, pre-session.

◈

Autonomic State (ANS)

Sympathetic vs. parasympathetic nervous system balance. Nexus reads your autonomic state to determine how aggressively the recovery protocol should push thermal or hydrotherapy load.

◉

Sleep Architecture

If integrated with wearable data, the system accounts for prior-night sleep quality — including REM and deep sleep ratios — as an input to the Nexus Score computation.

◌

Resting Heart Rate (RHR)

A secondary marker used to contextualise HRV readings. Elevated RHR relative to personal baseline is a signal for reduced session intensity.

The 0–100 Nexus Score

Your biomarkers are normalised, weighted, and mapped across 7 readiness bands — from Deep Deficit (0–14) to Peak Recovery (86–100). The score determines protocol intensity, modality sequencing, and session duration. Post-session, the difference between entry and exit score provides a measurable indicator of acute physiological response.

0–14

Deep Deficit

15–28

Deficit

29–42

Low

43–57

Baseline

58–71

Good

72–85

High

86–100

Peak

Ready to partner with Nexus Care?

Book a 30-minute call with our partnerships team.