If you go to your body metrics app. You will see all your standard values. It’s possible you want to remove a value from this overview, for example your Weight. If you click on Weight, you are taken to your progress graphs. 
You can see on the left side your values, then you can remove a value by clicking the delete icon. When you remove all the values, the value will be set to 0, then you can start again fresh. 

Mobile App FAQs