SLEEPCOACHGAME · answers

What is a good deep sleep score?

For most adults a good deep-sleep score is about 15–25% of the night — roughly 1.5 to 2 hours across a full 7–8 hour night. It naturally falls with age, and because trackers only estimate stages, the number is a rough guide. The most reliable score is how rested you feel across a week, which beats any single night.

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A gauge showing the healthy adult deep-sleep band of 15 to 25 percent highlighted in green, with notes that this is about 1.5 to 2 hours of an 8-hour night and that the feel-rested test beats any single score.
A healthy adult range is 15–25% of the night. How rested you feel beats any single number.

The healthy range

What "good" actually looks like for an adult.

15–25% of the night. For most adults a healthy deep-sleep share sits in this band — roughly 1.5 to 2 hours across a full 7–8 hour night.
It falls with age. Younger adults sit higher in the band; older adults naturally get less, and that is normal rather than a bad score.
The number is an estimate. Wrist trackers infer stages from movement and heart rate, so treat the percentage as a rough guide, not a precise grade.

The most reliable score isn't on the screen: how rested you feel when you wake, tracked across a week, beats any single night's percentage.

Moving toward the range

If you are below it, the habits are where to look.

A score under the healthy band usually points at a habit, not a broken body: caffeine too late, an evening drink, screens in bed, an irregular schedule. SLEEPCOACHGAME shows you 12 real-life scenes in 58 seconds, you answer Green Light or Red Light, and your AI Coach names the thief your round caught and the swap that gives your deep sleep — so the number has room to climb toward the healthy range.

Deep sleep turns waking up into something you look forward to.

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