How to Measure Heart Rate?
Heart rate is normally measured as the number of beats per minute. The heart rate monitors use a technology called photoplethysmography (PPG) which tests how much green or red light the monitor can see on your wrist.
Blood is usually red because it reflects red light, but it absorbs green light. The heart rate tracker looks through your writ to see how much green light is being absorbed. Usually, the more blood flows, the more green light is absorbed. However, between heartbeats, there is less green light absorbed.
Who would use a heart rate monitor?
Heart rate monitors are suitable for individuals between the age of 4-9 and 75-78. The devices are suitable for kids, adults, and seniors.
How much is a heart rate monitor?
The prices of heart rate monitors are based on the manufacturer and the features included on the device. Ensure you know exactly what you need before you buy heart rate monitor.