I see you did your homework. Fitbit scales needs to recalibrate if you move it between measurements or store it sideways when not in use.

Charge 3
Does fitbit record body measurements. For fitbit aria and fitbit aria 2 if you turn lean mode on or off your body fat percentage reading can be affected. These devices use purepulse technology to measure your pulse. The weight loss and body measurement trackers go hand in hand. For best results make sure your weight is correct in your fitbit profile. As at wendyb said youll have to enter them elsewhere. How does fitbit measure my cardio fitness score.
Your cardio fitness score is determined by your resting heart rate age sex weight and other personal information. The fitbit charge hr the fitbit charge 2 the fitbit blaze and the fitbit surge. Fitbit estimates your vo2 max and refers to it as your cardio fitness score. So why is it the only option with fitbit. Some of these go hand in hand. It was once part of fitbits design but somehow was discontinued.
The body measurements element of this software is really underwhelming. There are 3 main reasons why someone would want to wear a fitbit. Fitbit has four devices that track heart rate. It used to be possible to manually enter your body measurements as well as things as blood pressure if memory serves in your fitbit account but the feature was removed at some point. Up to 2 weigh ins might be required before your scale displays accurate measurements. 1 fitness tracking 2 weight loss 3 improve the way they look.
Purepulse is fitbits version of optical heart rate monitoring in which flashing lights located on the bottom of the device measure blood flow. I would love to have a place to record body measurements neck upper arm lower arm chest waist hips thigh calf ankle in order to have a more accurate account of my weight loss or muscle gain. How about a google sheet or excel if you no longer wish to use mfp.