Waking up to a fitness tracker showing a heart rate in the 30s while you were asleep? It's enough to send anyone scrambling for Google. While a low heart rate during sleep is generally normal – and even desirable for trained athletes – dipping into the 30s requires a closer look.
During sleep, your body relaxes, and your heart doesn't need to work as hard. This naturally leads to a slower heart rate, known as bradycardia. For many healthy adults, a resting heart rate between 40 and 60 bpm is perfectly normal.
However, a consistent heart rate in the 30s could indicate an underlying issue, such as certain medications, an overactive vagus nerve, or a problem with your heart's electrical system. It's particularly important to consult a doctor if you experience symptoms like dizziness, fatigue, shortness of breath, or fainting.
Don't panic! Track your heart rate over several nights and share the data with your doctor. They can help determine if your low sleeping heart rate is something to celebrate (excellent cardiovascular health!) or a cause for concern.
