Resting heart rate (RHR) is a critical metric that can provide insights into an individual’s cardiovascular health, especially when measured using smartwatches or wearable devices. Medical professionals define a normal RHR as ranging from 60 to 100 beats per minute (bpm), typically measured under calm conditions. However, data from wearable devices often reveal lower averages. For instance, users of Oura and Whoop report averages around 50 to 60 bpm, reflecting a trend among health-conscious individuals and athletes.
Lower RHR is generally associated with better cardiovascular fitness, as athletes or those in good health often exhibit lower rates. Changes in RHR can indicate various short-term factors, including stress, physical fatigue, menstrual cycle phases, illness, medication effects, or disturbances in sleep patterns. An elevated RHR that persists over several days may warrant medical consultation.
It is important to recognize that resting heart rates can vary significantly between individuals due to several factors, including body size and age. Moreover, comparisons between different individuals' RHR can be misleading, as each person has a unique baseline influenced by genetics and fitness levels.
Variability in readings between different devices is also notable, as discrepancies can arise from the technology used in each wearable. For effective monitoring, users should focus on long-term trends in their RHR rather than daily fluctuations. A gradual decrease in RHR over time may indicate improved fitness, while daily variations can serve as indicators of overall health and well-being.