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    3 min read 4 stepsApril 19, 2026Verified April 2026

    What Is the Oura Ring and How Does Sleep Tracking Work

    The Oura Ring is a health-tracking ring worn on your finger that measures sleep stages, heart rate, and recovery — here's how it works.

    In this guide (4 steps):

    1. 1.Order the right ring size
    2. 2.Charge and pair with the Oura app
    3. 3.Understand your three daily scores
    4. 4.Use the health insights for real-world decisions
    1

    Order the right ring size

    ~22s
    Oura ships a free sizing kit before your ring order. The kit contains plastic sizing rings numbered 6 through 13 — wear each one for a day to find the best fit, then order your size at ouraring.com. The ring is available in gold, silver, black, and stealth finishes. Most people wear it on their index finger for the most accurate readings, but any finger works.
    2

    Charge and pair with the Oura app

    ~33s
    Charge your Oura Ring using the included magnetic charging dock — a full charge takes about 80 minutes and lasts 4–7 days. Download the free Oura app from the App Store or Google Play. Open the app and follow the setup wizard to pair the ring via Bluetooth. You will need to create a free Oura account with your email address.

    Quick Tip

    The basic Oura app is free and shows your scores and daily trends. Oura also offers an optional membership ($5.99/month) that unlocks detailed health insights, cycle tracking for women, and personalized recommendations. The ring works without the membership.

    3

    Understand your three daily scores

    ~24s
    Each morning, the Oura app shows three scores: Sleep Score — how well you slept, considering duration, efficiency, and time in deep and REM sleep. Readiness Score — how recovered your body is, based on resting heart rate, heart rate variability (HRV), and sleep quality. Activity Score — how much you moved the previous day compared to your personal baseline. A score of 85 or above in green means you are well-rested and recovered.
    4

    Use the health insights for real-world decisions

    ~28s
    A low Readiness Score in the morning is a signal to take it easy — skip intense exercise, prioritize rest, and avoid staying up late. A high score means your body is primed for a harder workout or demanding day. Tap any score to see the individual factors that went into it. Over time, the app shows trends — for example, you might notice your sleep score drops when you drink alcohol or stay up past midnight, helping you make small changes that add up.

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    The Oura Ring is a lightweight titanium ring that tracks your sleep, readiness, and activity 24 hours a day. It has been clinically validated for sleep staging accuracy and is used by athletes, doctors, and everyday people who want detailed insight into how their body recovers overnight. The ring pairs with a free app on iPhone or Android, and gives you three daily scores — Sleep, Readiness, and Activity — each rated from 0 to 100.

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    Official Resources

    Medicare.govMedlinePlus — Health InfoAARP Health & Technology

    Sources used to create and verify this guide. View all sources →

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    What Is the Oura Ring and How Does Sleep Tracking Work — Step-by-Step Guide | TekSure