Had a very fast heart rate (up to 120 bpm) during my sleep last night. Should I be concerned? : r/AppleWatch
Normal Heart Rates for Children - Children's Health
How to Check Your Pulse
What's the difference between heart rate at rest vs sleep? - Quora
Resting Heart Rate vs. Sleeping Heart Rate? Does ... - Fitbit Community
Pulse while sleeping | MacRumors Forums
Resting Heart Rate: What's Normal, How to Improve It | WHOOP
What's your lowest heart rate reading while sleeping? | MacRumors Forums
Table 2 from The scoring of cardiac events during sleep. | Semantic Scholar
Heart Rate During Sleep: Look for These 3 Patterns - The Pulse Blog
Tachycardia: Symptoms, Causes & Treatment
Why Your Resting Heart Rate Just Got Higher on Apple Watch
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Normal Heart Rate for Children
Deviations from normal bedtimes are associated with short-term increases in resting heart rate | npj Digital Medicine
Heart Rate During Sleep - Welltory
Why Knowing Your Normal Resting Heart Rate Is Important to Your Health
Dynamics of Heart Rate and Sleep Stages in Normals and Patients with Sleep Apnea | Neuropsychopharmacology
What's a Normal Heart Rate for My Age? | WHOOP
What is a 'dangerous' heart rate?
Know your numbers: Heart rate - Mayo Clinic Health System
Solved: Low resting heart rate but not "in shape"? - Page 2 - Fitbit Community
Anyone test their sleeping heart rate? | MacRumors Forums
What's a Normal Heart Rate for My Age? | WHOOP
