Question

Activity trackers, also known as fitness trackers, have become a popular way to stay active as they can monitor your distance walked, time of sleep, heart
rate and activity level.
1)
No. You can exercise without checking your activity level. But some people
find controlling their activity level to be motivating. It can cause a tracker
owner to move more.
2)
There is no universal advice. It depends on what you want to use it for, what
kind of phone you have and other factors.
3)
Possibly, but don't count on it. Some trackers have a built-in sports application
that can detect when you begin your training or any other fitness activity such
as walking, running, outdoor biking and using a cardio machine in a gym. In
a nutshell, you don't have to do anything to tell the tracker you're going for
a run or a bike ride; the app starts working automatically.
4)
It depends on your goals. For example, if you want to improve your health
profile or lose weight, draw your attention to the number of steps taken.
5)
Wearable trackers get improved every year, but accuracy can still be a prob-
lem. However, controlling yourself with the help of a fitness tracker can be
quite motivating, despite any slight inaccuracies in metrics like the number of
steps taken.
A Will the tracker automatically know when I'm working out?
B How accurate are the metrics, anyway?
C Do I really need an activity tracker for health and fitness?
D What are the most important metrics to track?
E What is the best tracker out there?