Your Fitness Tracker Is Probably Wrong (And Here's the Proof) episode artwork

EPISODE · Mar 10, 2026 · 58 MIN

Your Fitness Tracker Is Probably Wrong (And Here's the Proof)

from All or Something Podcast · host Sohee and Ben Carpenter

Send us Fan MailYour fitness activity tracker probably isn't fully trustworthy and the science backs it up.In this episode, we dig into the research on fitness activity tracker (smart watch) accuracy, diving deep into the research especially for the Apple Watch, Fitbit, Garmin and Oura Ring.From step counts and heart rate monitoring to calorie burn and sleep tracking, we break down what the data actually says, and the results might surprise you.Whether you're training for a race, trying to hit 10,000 steps, or just wondering if your tracker is giving you the full picture, this episode is for you.What we cover:- How accurate are Apple Watch, Fitbit, Garmin and Oura Ring really?- Which metrics are most (and least) reliable.- What the latest research says about wearable accuracy.- Should you trust your tracker's calorie and heart rate data? If not, how big is the margin of error?Perhaps most importantly, does it matter if smart watchers and fitness activity trackers aren't fully accurate? Maybe that doesn't matter.P.S., if you enjoy these free podcast episodes and want to support us, there are two main ways of doing so. If you would like monthly lifting workouts, you can join the Momentum by Sohee fitness app. http://momentumbysohee.comIf you are interested in fat loss science, you can purchase Ben's best-selling comprehensive fat loss book, Everything Fat Loss. http://geni.us/EverythingFatLoss

Episode metadata supplied by the publisher feed · Published Mar 10, 2026

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Send us Fan Mail Your fitness activity tracker probably isn't fully trustworthy and the science backs it up. In this episode, we dig into the research on fitness activity tracker (smart watch) accuracy, diving deep into the research especially for the Apple Watch, Fitbit, Garmin and Oura Ring. From step counts and heart rate monitoring to calorie burn and sleep tracking, we break down what the data actually says, and the results might surprise you. Whether you're training for a race, tryin...

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Your Fitness Tracker Is Probably Wrong (And Here's the Proof)

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