1)  Open your RetrofitMe app, and hit the menu button in the top left corner.


2)  Select the "My Data" option on the menu.


3)  Press the '+' button in the top right corner.


4)  Ensure 'weight' is selected, choose the date you want to enter a weight for, and then type your weight into the text box.


5)  When you are done, hit the save button in the top right corner.