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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, 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.com

If 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

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In this episode, Sohee and Ben sit down for a candid (and occasionally exposing) relationship Q&A in which nothing is off limits.

We kick things off with a rapid-fire round of “Who’s more likely to…” — from who apologizes first after an argument, who’s more likely to spend money, who stays calm in an emergency, and more.

Then we zoom out into the bigger stuff.

We share how we met, how quickly we knew this was it, and the small, everyday habits that actually keep our relationship strong. We talk honestly about balancing being business partners and romantic partners, how we divide labor at home, and when we knew we wanted to become parents.

The final stretch gets deeper:
What would actually be a deal breaker?
Is there anything from our past that still impacts us today?
What scares us most about our relationship?
What makes each of us feel especially loved?

If you’re in a relationship, curious about our dynamic, or simply enjoy hearing how couples actually work through things — this one’s for you.

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Is 10,000 steps per day actually necessary for good health?

In this episode, we break down where the 10,000-step target came from (including the Japanese marketing origin story), what the scientific research really shows, and whether more steps always mean better health.

We cover:
- Where the 10,000 steps idea started
- What large cohort studies show about steps and mortality
- The dose–response relationship between steps and health
- Whether intensity matters more than total steps
- How many steps are “enough” for most people
- The difference between fat loss goals and longevity outcomes
- Whether 10,000 is optimal… or just a nice round number

If you’ve ever felt guilty for not hitting 10k or assumed it was the gold standard, this episode will give you a clearer, evidence-based perspective.

As always, we focus on nuance over extremes and data over dogma.