Deep, REM, light, awake — your Oura Ring breaks the night into stages, but the app rarely tells you what they mean for you. Vitra Health reads each stage against your personal baseline and names the behaviours that move them, in plain English.
Total sleep time is the headline; the stages are the substance. Two seven-hour nights can be completely different — one rich in deep and REM, the other shallow and broken. Vitra makes that difference legible.
What each stage is
- Deep
- Physically restorative — tissue repair, immune function. Front-loaded early in the night.
- REM
- Memory consolidation and mood regulation. Weighted toward the second half of the night.
- Light
- The transitional majority of the night; not wasted, but the least restorative.
- Awake
- Brief wake-ups are normal; a rising trend is worth noticing.
What Vitra adds
Each stage is plotted against your rolling baseline with a normal-range band, so you see when last night's deep or REM was genuinely low for you — not just lower than a generic ideal. Then it ties the change to your tagged behaviours: “rooms below 19°C give you +22 min of deep sleep,” “alcohol after 8pm costs you −40 min.” Personal, specific, local.
Frequently asked
What are the Oura sleep stages?
Oura splits your night into deep, REM, light and awake time. Deep sleep is the physically restorative stage; REM supports memory and mood; light is the connective tissue between them. Vitra reads all four against your personal baseline.
How much deep and REM sleep is normal?
It varies by person and age, so Vitra compares each stage to your own rolling baseline rather than a generic target — telling you whether last night was high, in line, or low for you.
What improves deep and REM sleep?
In most people's data Vitra finds bedtime consistency, a cool room, and avoiding late alcohol and caffeine move deep and REM the most. Vitra surfaces your personal pattern from your tagged days.
Does Vitra need an Oura subscription to read stages?
No. It reads sleep-stage data from your Oura account through the public Oura API. Vitra is a one-time purchase with no subscription.
Try Vitra with your Oura Ring
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