What Sleep Scores Are Good for (and When They Should Be Ignored)

Key Points:

• Sleep tracking devices like Apple Watch and Oura Ring provide approximations of sleep quality using sensors to measure heart rate, movement, and temperature, but their composite sleep scores are not clinically precise and vary by brand.
• These wearables can help users identify patterns and motivate behavior changes by offering daily feedback on sleep habits, though the most effective use is monitoring trends over time rather than focusing on nightly scores.
• Some users experience orthosomnia, an anxiety-driven obsession with achieving perfect sleep scores that paradoxically worsens sleep quality, highlighting the risk of information overload and stress from constant monitoring.
• Experts recommend simplifying sleep tracking by focusing on total sleep time and overall sleep quality scores, using broader time frames like weekly or monthly averages, and prioritizing subjective feelings of restfulness.
• To improve sleep without over-relying on trackers, individuals should practice good sleep hygiene such as avoiding screens before bed, engaging in relaxing activities, maintaining consistent sleep schedules, and being mindful of stimulant intake like caffeine and alcohol.