What is your wearable device actually telling you?
In this episode of Health Recoded, we break down how wearable devices like Whoop, Garmin, Oura Ring, and Fitbit track your health data and what that information actually means.
If you use a smartwatch or wearable device and want to better understand your heart rate, HRV, sleep score, and other health metrics, this episode will help you learn how to interpret your data with more clarity and less anxiety.
Many people don’t realize that wearable devices are not providing exact medical data. Instead, they track trends over time. Without that context, it’s easy to rely too heavily on the numbers or assume something is wrong.
In this episode, we explain how wearable technology works, what each vital sign means, and how to apply that information to your daily life.
We cover:
- The vital signs your wearable device tracks (heart rate, HRV, sleep, SpO2)
- What each metric actually means in the body
- The difference between wearable data and clinical vital signs
- How to interpret your wearable health data accurately
- When to pay attention to your numbers and when not to worry
If you’re looking to better understand your wearable data, improve how you use your device, or reduce anxiety around your health metrics, this episode will give you a clear starting point.
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Chapters:
00:00 Intro
00:53 What your wearable device is tracking
01:18 How wearable technology works
01:55 Are wearable devices accurate?
06:09 How to interpret wearable health data
07:29 When is low heart rate concerning?
15:44 What is HRV?
19:15 Is high blood pressure bad?
23:55 How to interpret SpO2
26:15 How to interpret your sleep score
29:29 Key takeaways
This content is for educational and informational purposes only and is not a substitute for medical advice from your healthcare provider.
Resources:
American Heart Association. (2024). Target heart rates chart
https://www.heart.org/en/healthy-living/fitness/fitness-basics/target-heart-rates
American Heart Association. (2023). Understanding blood pressure readings
https://www.heart.org/en/health-topics/high-blood-pressure/understanding-blood-pressure-readings
Pew Research Center. (2020). About one-in-five Americans use a smartwatch or fitness tracker
https://www.pewresearch.org/short-reads/2020/01/09/about-one-in-five-americans-use-a-smart-watch-or-fitness-tracker/
Cleveland Clinic. (2022). Heart rate variability (HRV): What it is and why it matters
https://my.clevelandclinic.org/health/symptoms/21773-heart-rate-variability-hrv
Cleveland Clinic. (2023). Blood oxygen level: What it is and how to increase it
https://my.clevelandclinic.org/health/diagnostics/22447-blood-oxygen-level
Bent, B., et al. (2020). Investigating sources of inaccuracy in wearable optical heart rate sensors
https://www.nature.com/articles/s41746-020-0226-6
Shcherbina, A., et al. (2017). Accuracy in wrist-worn sensor-based measurements of heart rate
https://jamanetwork.com/journals/jamacardiology/fullarticle/2588768
Harvard Health Publishing. (2021). Tracking your sleep: What works and what doesn’t
https://www.health.harvard.edu/staying-healthy/tracking-your-sleep-what-works-and-what-doesnt
de Zambotti, M., et al. (2019). Wearable sleep technology in clinical and research settings
https://academic.oup.com/sleep/article/42/5/zsz048/5420819
Topics covered:
wearable devices, smartwatch health data, how to read wearable data, heart rate, HRV, sleep score, SpO2, wearable accuracy, how wearable technology works, Garmin, Whoop, Oura Ring, Fitbit, health tracking, vital signs, how to interpret health data
