Low heart rate on Apple Watch ECG
A low heart rate on your Apple Watch ECG means your heart was beating slower than the typical resting rate, generally below 60 bpm for adults. For many people, especially the fit and active, that's a good sign. Here's what a low reading can mean and when a slow heart rate is worth checking.
What it can mean
- Good physical fitness: a low resting rate is common in well-trained athletes and very fit people, whose hearts pump blood more efficiently.
- Bradycardia: a persistently low rate, especially below 50 bpm at rest, may indicate bradycardia. This can relate to certain medications, sleep, or age-related changes, and occasionally to an underlying issue.
When to see a doctor
If your Apple Watch ECG shows a low heart rate without a clear reason, particularly alongside dizziness, fatigue or shortness of breath: it's worth speaking with a healthcare provider. A slow rate in a fit, symptom-free person is usually nothing to worry about. For normal ranges and what affects your rate, see understanding your heart rate.
This information is for general education only and isn't a substitute for professional medical advice, diagnosis or treatment. Always consult your healthcare provider with any concerns about your heart.
Frequently asked questions
What counts as a low heart rate on Apple Watch ECG?
For adults, a resting heart rate below 60 bpm is generally considered low. In athletes and very fit people this is common and usually normal.
Is a low heart rate on my ECG something to worry about?
Not on its own, a slow rate is often a sign of good fitness. It's worth checking with a doctor if a slow rate comes with dizziness, fatigue or shortness of breath, or if it drops well below 50 bpm at rest without an obvious reason.