The Galaxy S5 is the first phone to have a built-in heart-rate monitor.
The Galaxy S5, Samsung's latest flagship smartphone, has a built-in heart-rate monitor that measures your heart rate in your fingertips. Many sport watches and fitness trackers also have heart-rate monitors — some are worn on the wrist, while others use a chest strap, which is a fairly reliable heart-rate detection method.
Knowing your heart rate when exercising adds some benefits to a good workout — your heart rate reflects the intensity of your activity, so that information can tell you whether you are training efficiently. Your heart rate is measured in beats per minute (bpm), and a normal resting heart rate is usually between 60 and 100 bpm.
I tried the Galaxy S5 along with some of the other devices that measure heart rate, to see how practical, accurate and consistent these devices were. I compared the readings from the Galaxy S5 to those of an iPhone app that also measures your heart rate using your fingertip; the Basis fitness tracker, which measures your heart rate in your wrist; and the Polar Beat H7, which is a chest-strap monitor that wirelessly sends heart-rate readings to your phone.
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