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Are you relying on your running watch for heart rate training? 👀 You might be getting inaccurate data! In this video, Dr. Alyssa breaks down the differences between optical heart rate sensors (like those in Garmin, Apple Watch, and Coros) and chest strap monitors.

Learn how wrist-based HR monitors actually work, when they fail, and why chest straps are still the gold standard for accurate heart rate training.

Whether you're training by heart rate zones, doing Zone 2 cardio, or looking to improve performance, this video will help you understand which device gives you the most reliable data for smarter training.

TOPICS COVERED:

- How optical heart rate sensors work

- Why wrist-based monitors are often inaccurate

- Benefits of chest strap HR monitors for runners and endurance athletes

- Tips for getting the most accurate heart rate data during workouts

Perfect for runners, cyclists, endurance athletes, and anyone training with heart rate.

📌 Don't forget to like, subscribe, and drop a comment if you’ve noticed differences between your watch and chest strap readings!

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Time Stamps:

0:00 – Should You Use a Watch or Chest Strap?

0:07 – Intro: Why Accuracy Matters

0:25 – How Watches Measure Heart Rate

0:50 – Photoplethysmography Explained

1:35 – Why Wrist Sensors Are Less Accurate

2:10 – When a Watch Is 'Good Enough'

2:45 – Examples of Inaccuracies from Different Devices

3:13 – Chest Straps vs Armbands vs Watches

3:55 – How Chest Straps Work

4:30 – Best Chest Strap Brands & Options

5:10 – Tips for Getting Accurate Readings

5:53 – When to Use a Chest Strap

6:45 – Summary: Choose Based on Your Goals

7:22 – Free Zones Calculator & Final Thoughts

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