03/06/2026
This is something I see more and more with the athletes I coach.
They wake up feeling good. Then they check their watch. HRV is down. Readiness is in the red. Sleep score is low. And suddenly they don't feel good anymore.
It's called the nocebo effect. Negative information making you feel worse regardless of your actual physical state. Your watch tells your brain you're not recovered. Your brain believes it. Your body follows.
Here's the thing: consumer sleep trackers are only about 60% accurate. HRV is wildly variable day to day. Readiness scores are built on algorithms nobody fully discloses. You're making training decisions based on incomplete, inconsistent data and letting it override the most sophisticated feedback system ever built: your own body.
The best athletes I coach don't check their data before a session. They check it after. They feel the run first. Then they use the data to confirm or question what they felt. That's how data should work. As a tool, not a coach.
Leave your watch at home once a week. Run by feel. Remember what it's like to just run.
Tag the runner who checks their Garmin before deciding how they feel.