The Fatigue Score Explained

The Four Dimensions of Fatigue

Fatigue isn't a single feeling — it's the accumulation of four measurable factors. Shiftlyx combines them into one clear score so you can see where you stand and what's driving it.

1. Consecutive Work Days

How many days in a row without a proper reset. Each additional consecutive day adds to the fatigue load. After 4+ days, recovery becomes harder.

2. Night Clustering

When night shifts are packed close together, your circadian rhythm takes a bigger hit. The tighter the cluster, the higher the score.

3. Short Recovery

Shifts with fewer than 16 hours between finish and next start. These are the hidden traps in many rotas — look for turnaround shifts.

4. Circadian Disruption

How often your body clock has to flip between day and night shifts. Frequent flipping increases the cognitive load and health impact.

How They Combine

Each dimension scores independently (0-100). The overall Fatigue Score is a weighted combination that gives you a single number, plus a Plan Style label and Recovery label.

Interpreting Your Score

The power of the score isn't the number itself — it's understanding *why* it's that number.