> A good quality fitness tracker with a built-in heart rate monitor like a Garmin Forerunner will give you a reasonably accurate estimate of calories out.
These aren't accurate at all. How would they be? All they have to work with is height, weight, and BPM.
That's why I specified a good quality fitness tracker like a Garmin Forerunner. If you use something cheap like a Fitbit then of course it won't be accurate.
These aren't accurate at all. How would they be? All they have to work with is height, weight, and BPM.
https://www.reuters.com/article/us-health-fitness-tracker-ac...