Читать книгу Apple Watch For Dummies - Marc Saltzman - Страница 50

A custom heart rate sensor included with Apple Watch helps you in two ways.

 Gauging your exercise intensity and tracking overall calorie burn: (This is an estimation based on info you first input, required only once, such as your height, weight, gender, and age.) Apple Watch listens to your heart’s beats per minute (BPM) and shows you data on the screen — if and when you call for it.

 Tracking your heart rate throughout the day: Apple Watch can alert you if it detects unusually high or low heart rates — and yes, you can set the parameters if you want, even if you don’t feel symptoms. Behind the watch are multiple sensors that measure your pulse through your skin. Going beyond fitness are the fun applications too, such as sharing your heartbeat with someone — felt on his or her Apple Watch — to show you’re thinking about that person. See Chapter 5 for how to share this information to your heart’s content.