How do fitness trackers measure distance and body parameters?
Hello, my name is John, and I am 28 years old. I am crazy about sport; I have been doing different sports since my childhood. Now everyone buys fitness trackers. I’m also interested in it, so I started to look for a good gadget. But I still have some questions. How does fitness tracker measure distance? Running is an important part of my workout, so I want to know whether the measurements will be right.
Is fitness tracker really so useful device as many people tell? How does fitness tracker measure the human body parameters? Does this fitness device work in any weather conditions? In what way does this gadget charge? What is the fitness tracker really good for?
Hope you will explain to me its advantages, thank you very much!