Resting HR
bpm
Lowest sustained heart rate during sleep, used as a cardiovascular recovery input to the Recovery Score.
Typical optimal range 45 bpm - 65 bpm
Population median 62 bpm
Key factors
- Aerobic fitness level
- Prior day activity load
- Body temperature at sleep time
What affects this metric
- Alcohol and late meals keep resting heart rate elevated overnight.
- Illness raises it before symptoms appear.
- It moves opposite to HRV under load.
References
Peer-reviewed sources supporting the key factors, contributing factors, and typical optimal range shown above.
- Ostchega Y, Porter KS, Hughes J, Dillon CF, Nwankwo T. Resting pulse rate reference data for children, adolescents, and adults: United States, 1999–2008. Vital and Health Statistics, Series 11, No. 41. 2011. www.cdc.gov/nchs/data/series/sr_11/sr11_041.pdf
- Reimers AK, Knapp G, Reimers CD. Effects of exercise on the resting heart rate: a systematic review and meta-analysis. Journal of Clinical Medicine. 2018;7(12):503. doi.org/10.3390/jcm7120503
- Pietilä J, Helander E, Korhonen I, Myllymäki T, Kujala UM, Lindholm H. Acute effect of alcohol intake on cardiovascular autonomic regulation during the first hours of sleep. JMIR Mental Health. 2018;5(1):e23. doi.org/10.2196/mental.9519
- Radin JM, Wineinger NE, Topol EJ, Steinhubl SR. Harnessing wearable device data to improve state-level real-time surveillance of influenza-like illness in the USA. The Lancet Digital Health. 2020;2(2):e85–e93. doi.org/10.1016/S2589-7500(19)30222-5
This guide is general information, not medical advice. Talk to your clinician about your own results.