Sleep Common Questions

Your Sleep Score is a percentage (0–100%) that summarizes your sleep quality and efficiency each night.

Scores are categorized as follows:

• Poor sleep: below 70%

• Fair sleep: 70%–85%

• Excellent sleep: above 85%

• Time Asleep: Compared to your personal sleep goal, more sleep (within range) improves your score.

• Sleep Stages: Balanced time in Light, REM, and Deep Sleep.

• Heart Rate Dip: A larger drop in heart rate during sleep indicates deeper, more restorative sleep.

• Sleep Efficiency: The percentage of time spent actually sleeping.

• Sleep Continuity: How uninterrupted your sleep was.

Tracking your Sleep Score over time helps you identify patterns and improve long-term sleep quality.

Different apps use different algorithms. Bevel calculates sleep with its own factors and weighting, so scores won’t match others. You can view more about Sleep Score here.

A lower Sleep Score is usually caused by one or more of the following:

• Elevated Resting Heart Rate (RHR) compared to your baseline

• Lower Heart Rate Variability (HRV) than usual

• Less REM or Deep Sleep than normal

• Not enough total sleep compared to your goal

• Smaller Heart Rate Dip during the night

• Frequent wake-ups or interruptions

Improving sleep consistency, duration, and recovery habits can help raise your score.

Naps do not directly impact your Sleep Score, as the score only considers your primary (overnight) sleep.

However, naps can:

• Help reduce sleep debt

• Lower how much sleep you need the following night

You can view detailed sleep data in your Primary Sleep activity:

• From the Home Timeline, or

• Go to Sleep Score → Scroll down → Primary Sleep

Metrics include:

• Sleep Efficiency

• Sleep Continuity

• Heart Rate Dip

• Sleep Stages

• Time Asleep

Graphs include:

• Sleeping Heart Rate

• Sleeping Heart Rate Variability

• Sleeping Respiratory Rate

• Sleeping SpO₂

Bevel does not directly track sleep or naps, it reads data from Apple Health.

To check:

1. Open Apple Health → Sleep Score → Sleep

2. Scroll down and tap “Show All Data”

3. Review which app or device logged the entry

Incorrect nap data usually comes from another connected app or device.

You can manually add sleep in Bevel:

• Go to Sleep

• Scroll to the timeline

• Tap the “+” button

You can add:

• Sleep sessions for the current day

• Naps

Important notes:

• You cannot add full overnight sleep from previous nights

• Naps within ~15 minutes of your main sleep may merge into that session

For full control, you can also log sleep directly in Apple Health.

When your alarm is ringing:

• Open the Bevel Watch app

• Tap “Stop” instead of “Snooze”

This can happen if:

• Your sleep duration is inconsistent

• HRV or RHR trends are off baseline

• Sleep interruptions are frequent

Focus on:

• Consistent sleep schedule

• Reducing disturbances

• Improving recovery habits (stress, hydration, nutrition)

On your watch, open the Alarm and tap the three dots in the top right corner. Once an alarm is set, scroll down to the Alarm Haptic section and choose your preferred intensity.

Options include: Progressive, Gentle, Medium, and Intense.