# How Luma Detects Breaks on Mac - Signal logic explained

Canonical: https://www.lumafocus.cn/en/how-luma-detects-breaks/
Language: en

Learn how Luma detects break timing on Mac: fatigue-threshold glow and presence-based away/return are parallel signals, not a single chain.

## Summary

Luma uses parallel signals: glow is triggered by fatigue thresholds, while away timing and return confirmation are triggered by presence detection.

## Mechanism facts

- Glow and away timing are parallel mechanisms, not sequential dependencies.
- Away timing can run even when glow does not appear.
- Return confirmation determines whether away duration is counted as rest.
- Longer away duration can lead to stronger recovery feedback in rhythm tracking.

## Mechanism FAQ

### Does Luma require glow before break timing starts?

No. Break timing can start from away detection even when glow has not appeared.

### What decides when glow appears?

Glow follows configured fatigue thresholds and is independent from away timing triggers.

### How is recovery reflected?

When away duration is counted as rest, it contributes to fatigue recovery feedback.

## Keywords

- how luma detects breaks
- mac break detection logic
- presence based break reminder