For the most accurate heart rate measurement, when should it be taken?

Taking heart rate measurements right when you wake up while in a supine position provides the most accurate and consistent reading. At this time, the body is in a resting state, unaffected by physical activity, stress, or other factors that can lead to fluctuations in heart rate.

Measuring heart rate upon waking helps in obtaining a baseline resting heart rate, which is crucial for assessing cardiovascular fitness and overall health. It minimizes variables like adrenaline release from exercise or daily activities that could artificially elevate the heart rate.

This practice is widely recommended among fitness professionals as it captures the body's true state of rest, allowing for better monitoring of cardiovascular health over time and tracking improvements in fitness levels.