Hi Deborah Pelletier. Yes, you can undo an "I Did This". It's probably easiest to do from our website. Navigate to the "I Did This" tab under your profile page. Next to the workout you will like to "undo", you will see an "X" in the upper right corner of it. Click that and it will undo the "I did this". Please note, as soon as you click the "X", it will be undone. There is no confirmation if you want to do this or not.

Have a great vacation, Deborah Pelletier!