I've been wearing an Oura ring 4 for about a month now, and I love it! It tracks several statistics related to sleep, activity, and overall health. Simply looking at these numbers motivates me to make decisions that will increase them. As a result, I've been sleeping and exercising way more with ~0 willpower needed. I think people should consider getting one if they don't have one already.
The Oura ring is a ring I wear on my finger. Any finger works; I wear mine on my middle finger most of the time. After wearing it for a day, health statistics become visible in the companion app. The ones I use most at the moment are sleep and activity, though there are many others I haven't unlocked yet (they take a while to calibrate).
my Oura ring on my right hand
Sleep
The ring knows when I fall asleep and when I wake up, breaks the night down into deep, light, and REM sleep, and synthesizes it all into a single sleep score. I've learned a lot about how I actually sleep just from watching this.
When I started, my score was okay-but-not-great — usually somewhere in the 60s. And then the score itself did the work. I found myself naturally wanting to bump up my sleep score. Without ever deciding to "fix my sleep", I just… started sleeping more. Now I'm in the 80s most nights, and it feels great.
My sleep over the past ~week. Mostly 8h+
Activity
The ring also detects all sorts of activity — walking, cycling, weightlifting, sports — and gives me a good estimate of how many calories I've burned each day. That's directly useful for managing my diet and weight. E.g. now I know I burn between 3500 and 4000 kcal on an average day and I can plan my diet accordingly to lose / gain weight.
Again, just being aware of the number is somehow really motivating to make me want to hit my daily activity goal, with zero willpower required.
Activity trend over the past 5 weeks. It's increased pretty naturally
How it works
On the inner side, it has sensors that shine light through your finger to observe your blood vessels. This turns out to be surprisingly powerful - from this they can estimate things like your heart rate, oxygen saturation (oxygenated blood is redder), calories burned, whether you're sleeping, and even your 'cardiovascular health' (this turns out to be based on measuring the elasticity of your arteries, which can be determined from the shape of your blood pressure curve).
Practical stuff
The ring is titanium, and is pretty tough. I wear mine when I'm in the shower, weightlifting, bouldering, and find that it's generally very durable against rough treatment. There are a couple small scratches but the surface still looks mostly pristine.
The battery lasts a few days between charges, and the charger is just USB-C. Very low maintenance.
If you want to get one
It costs a few hundred pounds up front, plus a subscription of about £6/month for the app. I thought it was a bit pricey at first but after a month of use I'm quite happy with the purchase!
If you're at all curious about your sleep or activity, I'd say go for it — it's been one of my better purchases this year. Also, the Oura ring 5 just came out (June 2026) — thinner, lighter, and with about a week of battery life — so if you're buying new, that could be the one to get.
I've been wearing an Oura ring 4 for about a month now, and I love it! It tracks several statistics related to sleep, activity, and overall health. Simply looking at these numbers motivates me to make decisions that will increase them. As a result, I've been sleeping and exercising way more with ~0 willpower needed. I think people should consider getting one if they don't have one already.
The Oura ring is a ring I wear on my finger. Any finger works; I wear mine on my middle finger most of the time. After wearing it for a day, health statistics become visible in the companion app. The ones I use most at the moment are sleep and activity, though there are many others I haven't unlocked yet (they take a while to calibrate).
my Oura ring on my right hand
Sleep
The ring knows when I fall asleep and when I wake up, breaks the night down into deep, light, and REM sleep, and synthesizes it all into a single sleep score. I've learned a lot about how I actually sleep just from watching this.
When I started, my score was okay-but-not-great — usually somewhere in the 60s. And then the score itself did the work. I found myself naturally wanting to bump up my sleep score. Without ever deciding to "fix my sleep", I just… started sleeping more. Now I'm in the 80s most nights, and it feels great.
My sleep over the past ~week. Mostly 8h+
Activity
The ring also detects all sorts of activity — walking, cycling, weightlifting, sports — and gives me a good estimate of how many calories I've burned each day. That's directly useful for managing my diet and weight. E.g. now I know I burn between 3500 and 4000 kcal on an average day and I can plan my diet accordingly to lose / gain weight.
Again, just being aware of the number is somehow really motivating to make me want to hit my daily activity goal, with zero willpower required.
Activity trend over the past 5 weeks. It's increased pretty naturally
How it works
On the inner side, it has sensors that shine light through your finger to observe your blood vessels. This turns out to be surprisingly powerful - from this they can estimate things like your heart rate, oxygen saturation (oxygenated blood is redder), calories burned, whether you're sleeping, and even your 'cardiovascular health' (this turns out to be based on measuring the elasticity of your arteries, which can be determined from the shape of your blood pressure curve).
Practical stuff
The ring is titanium, and is pretty tough. I wear mine when I'm in the shower, weightlifting, bouldering, and find that it's generally very durable against rough treatment. There are a couple small scratches but the surface still looks mostly pristine.
The battery lasts a few days between charges, and the charger is just USB-C. Very low maintenance.
If you want to get one
It costs a few hundred pounds up front, plus a subscription of about £6/month for the app. I thought it was a bit pricey at first but after a month of use I'm quite happy with the purchase!
If you're at all curious about your sleep or activity, I'd say go for it — it's been one of my better purchases this year. Also, the Oura ring 5 just came out (June 2026) — thinner, lighter, and with about a week of battery life — so if you're buying new, that could be the one to get.