Breathing rate, heart rate and HRV all from our pulse

Our pulse changes continuously. Here are some of the key factors related to our health & wellness that we can measure from these changes from breathesimple

The 8 Biggest Mistakes Made When Measuring Heart Rate Variability

Can resting heart rate around 51 to 55 be unhealthy and dangerous

Heart Rate Variability vs. Heart Rate - Elite HRV

ADAPTABILITY OF THE HEART

eSense Pulse - Mobile Heart Monitor

What is Heart Rate Variability (HRV)?

The physiological effects of slow breathing in the healthy human

Heart Rate Variability: The Heart of Flow, by April Ablon

Heart rate variability - Wikipedia