If you forgot to log an exercise on a previous day, you can still add it to ensure your Diary is complete and accurate. To add exercise entries for past dates, follow these steps:

1. Open the app and go to your Diary.
2. Tap "Add Exercise/Sleep".
3. Tap the calendar icon at the top of the page.
4. Select the date you want to backtrack.
5. Tap the plus sign (+) under Exercise and add your data.