Our heart is the most important muscle in our body and is working round the clock to keep us alive and healthy. The heart pumps oxygen rich blood and nutrients to the body through the blood vessels, while carrying metabolic waste such as carbon dioxide to the lungs. When the heart doesn’t get the care it needs, serious problems develop.


A healthy heart rate is an indicator of a healthy heart. Heart rate is the number of times the heart beats each minute. Resting Heart Rate (RHR) is a snapshot of how well our heart muscle is functioning. Normal RHR for adults ranges from 60 to 100 beats per minute (bpm).

The variation in the heart rhythm between heartbeats is known as Heart Rate Variability (HRV). Heart’s ability to respond to different situations in reflected in these variations. A normal HRV for adults can range anywhere from below 20 to 200 milliseconds (ms).

Blood pressure is a measure of the force that your heart uses to pump oxygen-rich blood out to your arteries. Blood pressure is measured in millimetres of mercury (mmHg). Systolic pressure is the pressure when your heart pushes blood out and Diastolic pressure is the pressure when your heart rests between beats. Normal range for blood pressure is when readings consistently range from 120mm Hg systolic and 80 mm Hg diastolic.


Around 32% of deaths globally are caused by coronary heart disease, making it the world’s single biggest killer. Over 80% of all cardiovascular-related deaths occur in low and middle income countries.

Nearly 1 in 2 adults have high blood pressure or hypertension. If left uncontrolled, high blood pressure can increase risk of heart disease, stroke, heart failure, kidney disease, pregnancy complications, and cognitive decline later in life.


We can check our heart health at home by measuring pulse rate and blood pressure. CoHeal mobile application can synthesize a cardiac rhythm in real-time using Bio-scan.

While a lower RHR may imply more efficient heart function and better cardiovascular fitness, such as in athletes, a low RHR could also signal fatigue or even bradycardia. A high RHR could be a sign of an infection or heart arrhythmia

The Fight-or-flight (sympathetic) system tells our heart to speed up, limiting space for variability and is associated with cardio-vascular stress, or illness. The Rest-and-digest (parasympathetic) system tells our heart to slow down, making room for variability between beats and is associated with general fitness and good recovery. 



Healthy behaviors lower the risk of heart disease and prevent related serious chronic conditions. Some of these include making healthy food choices, exercising regularly, quitting smoking, moderating alcohol intake and monitoring heart health regularly.

RHR can also be influenced by other factors, such as
  • Women tend to have higher RHR than men
  • RHR can increase during hot weather
  • Stress, anxiety or happiness can raise RHR
  • Standing or sitting up, after lying down, can increase RHR
  • Medication can decrease RHR

Each person’s HRV is unique, so compare your HRV to your own averages and avoid comparisons to others. An ideal approach would be to measure your HRV over 24 hours.


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