If you've set a body measurement goal (BMI, body fat, waist size etc), you'll need to log body measurements on a regular basis to track your progress toward that goal.
To add a body measurement log entry, start by selecting My Measurements from the main (left) navigation menu.
On the Body tab, tap the drop down to choose the metric for which you'd like to enter a measurement.
Tap your desired measurement metric in the list to select it.
Then, tap the Plus (+) button to add your measurement.
Select the date and time for your entry, then choose Continue.
Finally, enter the value for your measurement, and select OK.
The entry will then be added to your log for the chosen body measurement metric.