This has to happen sooner or later. My fitness tracker logged my sexual activity as a bike ride.
Apparently, my “ride” was 1.16 kilometers with average speed of 2.9km/h
This has to happen sooner or later. My fitness tracker logged my sexual activity as a bike ride.
Apparently, my “ride” was 1.16 kilometers with average speed of 2.9km/h
How accurate is your Apple Watch?
A new meta-analysis from the University of Mississippi reviewed 56 studies comparing Apple Watch data to clinical tools.
Result: Accurate for heart rate (4.4% error)
Fair for step counts (8.2% error)
Inaccurate for calories burned (28% error)
Wearables are useful for habits and motivation—but not diagnostic tools.
Full study: https://olemiss.edu/news/2025/06/apple-watch-accuracy-study/index.html
#Wearables #FitnessTracking #HealthTech #AppleWatch #SportsAnalytics #QuantifiedSelf
"Eventually, I stopped responding to my body. I was responding instead to a dashboard." — @Daojoan
This is a great point and very much translates to so many other parts of life/work where people stop listening to their "body" (or to their org/product/offering), outsourcing/numbing/dumbing down their decision making based on dashboards of collected metrics and then changing their behaviors on auto-pilot to improve said metrics — without ever asking themselves if the data collected actually represents answers to the right (or even important) questions...
Metrics always invite comparison & competition — on a global scale — often without considering our own subjective contexts/needs/limits/aims...
Does the number of copilot prompts per day on a CTO dashboard indicate a highly productive developer or does a big fat zero merely show a different approach to problem solving?
Does the lack of constant updates to a FLOSS project mean it's become neglected/unusable or does it simply indicate it reached a level of stability?
Likewise, does my product/app need constant UI changes/updates to "streamline" user experience (often without even consulting users) based on some "goal" metrics?
Am I seen as an unproductive FLOSS developer if my public commit log doesn't show daily updates? Do gaps indicate laziness, illness, deep thinking or work on other projects? Like gaps in a CV, will these gaps of activity data hinder future employment chances or would I even want to work with orgs who select on this criteria?
Is a hike only good/better because it exceeds X kilometers or Y elevation meters? How does one measure the stunning views or the quality of the company which shared that experience?
More personal data analysis! I can confidently say that I'm 19% happier on average than I was 18 years ago. Consistent 1% YoY growth in happiness. #QuantifiedSelf
Here's some updates on the little 'Personal API' Django app I made for getting some status updates in the footer of my website.
You know what would be really cool? A #quantifiedself person influence monitor. Say I have a #Fitbit and Joe has a Fitbit, we could have them detect when we are in proximity (if both people agreed) and then it would let us know over time how being around the other person influenced us - e.g. did heart rate variability increase or decrease (do they relax us or cause stress), did we burn more calories (maybe we usually go on hikes together), did we sleep better that night, and so on.
There are definitely people in my life who I'm pretty sure have significant effects on me in both directions, it'd be awesome to quantify them.
It would also be cool if one could do this without data sharing - e.g. maybe one presses a button on ones device to indicate one has entered x's presence and again when one has exited...
Honestly, I'd totally forget to do this...so something passive would be better - e.g. when you want to start tracking the next time you are around someone you press a button and it scans for electronic signatures and identifies Bluetooth etc. uniquely so that when you are around then it auto knows and can record...
The latter raises issues of #consent and #privacy...I'm not sure how/if one could do this in an ethical manner...but I'd like to have it
As part of moving away from iOS, I've also replaced my Apple Watch with a Garmin device. Which means I'll have to figure out a way to get some of those data out to display it in my website footer!
Does anyone have a recommendation/existing solution for how to export small chunks of that data in regular intervals to an HTTP endpoint? Or will I have to learn how to use the Garmin API after all?
Continuous glucose monitoring is kind of a miracle, but one of the shortcomings of the one I use (FreeStyle Libre) that I find irksome: a precipitous decline in blood sugar will cause the sensor to go offline. It’s always, always a sharp decline, but never for a spike.
Glucose shooting up because you’ve been irresponsible? Nope, we saw that. It’s in your permanent record.
Glucose coming down fast because you’re doing something good for yourself? We’re gonna take a break. You don’t need that accomplishment in your graph, do you?
Catching up on the @oshwassociation show and tell sessions to remind myself of the format before I'm on it on Thursday, and it was lovely to hear about @ivor's IvorTRK
Today we drove up to Laguna Brava, at 4000+ meters above sea level. Fun to see what it does to the SpO2 readings.
Теоретические и практические рассуждения об оцифровке отдельных аспектов личности
В контексте ИИ в статье понимается использование комплекса механизмов на основе LLM + reasoning + agents + RAG + ML. В контексте статьи оцифровка личности или самодигитализация – это практика всеобъемлющей записи и оцифровки различных аспектов жизни человека. Идея статьи заключается в обзоре теоретических и практических аспектов создания «единого цифрового архива всего опыта индивида» – то есть фиксировании практически полного набора мыслей, переживаний и действий человека в цифровой форме. Для этого используются разнообразные средства: от носимых сенсоров и приложений до "цифровых дневников". Концептуально самодигитализация близка к движениям Quantified Self и лайфлоггинга , цель которых – « самопознание через сбор данных о себе с помощью технологий ». В итоге получается постоянный поток персональных данных – своеобразная «чёрная коробка» жизни человека, превращающая его повседневный опыт в данные, пригодные для хранения, анализа и воспроизведения.
EURO 2024: How player tracking works technically
The European Championship ball is called "soccer love", but it is a high-tech device with sensors. Its data and AI help referees to recognize offside, for example.
heise+ | Trends 2025: Neue Sensoren revolutionieren das Gesundheits- und Fitnesstracking
Tattoo-Sticker, Pflaster oder Zahnaufkleber, das sind einige der künftigen Wearables, die mittels schlauer Mikrosensoren mehr Vitalwerte erfassen als bisherige.
Not mine, but FFS having a “My Year In Tacos" dataviz at the end of 2025 is the most inspiring quantified self goal I've seen all year.
My secret to above average fitness? Plateauing and then waiting to get old enough to get into a different age bracket. From below average to above average, by benefit of turning 40
Alternatively, a cautionary tale about the limits of quantifying health and wellbeing.
Le dernier nombre média est tombé : en 2024 j'ai regardé 109 000 vidéos sur Tiktok soit 401 heures réparties sur 2 000 sessions
En 2024, j'ai ajouté 19 000 mots à mon journal. J'ai oublié de l'écrire le jour même 4 fois, et je n'ai pas pu 4 autres fois. J'ai utilisé le verbe « être » 787 fois, 30 fois plus qu'« avoir ».
La personne la plus citée l'a été 93 fois.
Je n'ai utilisé qu'une fois les termes « protagoniste », « orfèvrerie » et « embrasser »
I analysed the #Mastodon posts I've made over the last 2+ years for the clients I've been using, and created some charts.
The first one is the pie chart of the post count by clients. @ivory for Mac is the winner here, with 30% posts made using it. @phanpy and the default Mastodon web client are seconds at 22%. @trunksapp is third at 12%, and @elk comes fourth at 10%.
The second chart shows the post count split by clients over time. It shows that I started with using the web client for the first few months, tried Ivory, trunks and Elk for the next few months, and then settled on using Ivory on my laptop and trunks on my phone. Few months later, I replaced trunks with Phanpy, and then continued using the Ivory-Phanpy combo consistently for over a year, with few posts being made from Web, Elk and trunks. The last bar shows me trying to replace Ivory with Phanpy as my sole major client.
Nouvelle année, nouveau test de personnalité "Quel personnage de fiction êtes-vous". Cette année je suis plutôt Evan de Superbad ! Troisième podium consécutif pour Chidi Anagonye
Success! Met my cycling goal (3000 km) for the year, and with a whole day to spare. And on the first sunny day in weeks.
| Daily average | 8.3 km |
| Weekly average | 58.1 km |
| Last month | 246.6 km |
| Total | 3000.7 km |
| Number of rides | 178 |
| Average distance | 16.9 km |