![Deviations from normal bedtimes are associated with short-term increases in resting heart rate | npj Digital Medicine Deviations from normal bedtimes are associated with short-term increases in resting heart rate | npj Digital Medicine](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41746-020-0250-6/MediaObjects/41746_2020_250_Fig1_HTML.png)
Deviations from normal bedtimes are associated with short-term increases in resting heart rate | npj Digital Medicine
![Nocturnal Arrhythmias and Heart‐Rate Swings in Patients With Obstructive Sleep Apnea Syndrome Treated With Beta Blockers | Journal of the American Heart Association Nocturnal Arrhythmias and Heart‐Rate Swings in Patients With Obstructive Sleep Apnea Syndrome Treated With Beta Blockers | Journal of the American Heart Association](https://www.ahajournals.org/cms/asset/3a769e18-dadf-4d1c-84fb-812693b8132e/jah35439-fig-0002.png)
Nocturnal Arrhythmias and Heart‐Rate Swings in Patients With Obstructive Sleep Apnea Syndrome Treated With Beta Blockers | Journal of the American Heart Association
![Dynamics of Heart Rate and Sleep Stages in Normals and Patients with Sleep Apnea | Neuropsychopharmacology Dynamics of Heart Rate and Sleep Stages in Normals and Patients with Sleep Apnea | Neuropsychopharmacology](https://media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fsj.npp.1300146/MediaObjects/41386_2003_Article_BF1300146_Fig3_HTML.gif)
Dynamics of Heart Rate and Sleep Stages in Normals and Patients with Sleep Apnea | Neuropsychopharmacology
![My heart rate is always like this when I sleep (never the "hammock" shape) Should I be concerned? I'm 20f : r/fitbit My heart rate is always like this when I sleep (never the "hammock" shape) Should I be concerned? I'm 20f : r/fitbit](https://i.redd.it/5vvzdt483an41.jpg)