How are active minutes tracked?

[roadwalker]

My Charge 2 doesn't seem to be tacking my "active minutes" like it used to. If I go on a brisk 5 minute walk, shouldn't it track that?

Moderator edit: updated subject for clarity

[AlvaroFitbit]

@roadwalker A warm welcome to our Community!

I will gladly assist you with this. From the help site you can read the following:

Fitbit devices calculate active minutes using metabolic equivalents (METs). METs help measure the energy expenditure of various activities. Because they do so in a comparable way among persons of different weights, METs are widely used as indicators for exercise intensity. For example, a MET of 1 indicates a body at rest. Fitbit devices estimate your MET value in any given minute by calculating the intensity of your activity. 

You earn active minutes for activities at or above about 3 METs.  To stay in line with the Center for Disease Control's (CDC’s) “10 minutes at a time is fine” concept, minutes are only awarded after 10 minutes of continuous moderate-to-intense activity. You can view the CDC’s recommendations on the CDC website. 

If the same activity gives you active minutes one day and fewer active minutes the next day, remember that the intensity of exercise is key. Often what seems like the exact same amount of effort over the same distance in fact differs slightly enough to change your active minutes total.

Let me know how it goes.