What Is the Sleep Score?
The Sahha Sleep Score is a daily 0–100 score that combines sleep duration, quality, and consistency into a single signal. It transforms raw sleep data from smartphones and wearables into an actionable measure of overnight recovery.
Why Is the Sleep Score Important?
Sleep is essential for physical recovery, cognitive performance, emotional regulation, and long-term health. The Sleep Score surfaces patterns that are difficult to interpret from raw metrics alone, helping apps identify insufficient sleep, inconsistent routines, or poor sleep quality and respond with appropriate recommendations.
How to Interpret the Sleep Score
The Sleep Score is presented on a scale from 0 to 100 and categorised into four levels:
- 81–100 (High): Strong sleep patterns that effectively support health and recovery.
- 66–80 (Medium): Moderate sleep patterns with room to improve consistency or duration.
- 51–65 (Low): Sleep may be impacted by irregular schedules or frequent disruptions; consider adjusting habits.
- 0–50 (Minimal): Significant sleep imbalances; more substantial changes are recommended.
Viewing the Sleep Score over time helps identify trends in sleep behaviour rather than focusing on a single night.
Factors Contributing to the Sleep Score
The Sleep Score is influenced by multiple sleep-related factors, including:
- Total sleep duration: Whether nightly sleep falls within the recommended 7–9 hour range.
- Sleep consistency: How regular bedtime and wake time are across nights.
- Time asleep vs awake: The proportion of time in bed actually spent sleeping.
- Sleep interruptions: Frequency and duration of awakenings during the night.
- Sleep quality indicators: Depth and restorative value of sleep, including sleep stages when available.
These factors are combined to reflect overall sleep behaviour rather than relying on a single metric.
What Data Is Used From Phones and Wearables?
The Sleep Score adapts based on the data available from connected devices.
Phone-based data Smartphones provide basic sleep timing and duration estimates. While useful, phone data may not capture the full detail wearables provide.
Wearable-based data When connected, wearables contribute more detailed sleep signals such as sleep stages, movement during sleep, and sleep interruptions for a more comprehensive assessment.
Sahha’s scoring model normalises these inputs to ensure consistent scoring across different devices and data sources.
How to Improve the Sleep Score
The Sleep Score improves when sleep duration increases, sleep quality improves, and sleep schedules become more consistent.
- Keep a consistent schedule: Go to bed and wake up at the same times each day, even on weekends.
- Prioritise duration: Aim for 7–9 hours of sleep per night.
- Optimise your environment: Keep the bedroom dark, quiet, and cool to reduce disruptions.
- Limit pre-sleep stimulation: Reduce screen use and avoid caffeine, alcohol, or heavy meals close to bedtime.
- Wind down before bed: Establish a calming pre-sleep routine to signal the body it’s time to rest.
Small, consistent improvements to sleep habits can lead to meaningful increases in the Sleep Score over time.