Is Cardio Score weight biased?

[OverIt]

So I may be premature, I've only had my charge 2 for a week and a half.

My cardio score has me at in the low 30's but I workout 5 days a week, low 60's heart rate, and average 13k steps a day.

Only thing I can think of is my physical stats (5'8" 200lbs 39yr old female)

I'm not sure where my cardio score expectations should be. 

Thanks in advance 

[USAF-Larry · Accepted solution]

@OverIt, check out this Fitbit help article on What is my Cardio Fitness Score? Among the descriptions, it says this:

Your cardio fitness score is determined by your resting heart rate, age, gender, weight, and other personal information. For best results, make sure your weight is correct in your Fitbit profile. Also, wear your tracker to sleep for a better resting heart rate estimate. Your cardio fitness score will be shown as a range unless you use GPS for runs.

[OverIt]

Yes I read that.  But I didn't really find that helpful.

I guess I need to use it more to see what I'm looking for.

Thanks