Inter- and intraindividual variability in daily resting heart rate and its associations with age, sex, sleep, BMI, and time of year: Retrospective, longitudinal cohort study of 92,457 adults | PLOS ONE
![Any insights into why my resting heart rate might be fluctuating like this? Has anyone else experienced it? Pretty long term, too. : r/fitbit Any insights into why my resting heart rate might be fluctuating like this? Has anyone else experienced it? Pretty long term, too. : r/fitbit](https://preview.redd.it/zg8hlotohq181.jpg?width=640&crop=smart&auto=webp&s=86df3fec6aefc0f28ad1bc047476e391bd63987b)
Any insights into why my resting heart rate might be fluctuating like this? Has anyone else experienced it? Pretty long term, too. : r/fitbit
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