To delete an entry from your exercise diary:
On the Web:
Click the "Exercise" tab to view your diary. Click the circular red button to the far right of an entry to remove it from your diary.
In the Android, iPad and iPhone apps
On the diary page, tap the "Edit" or Pencil icon at the top.
Each item in your diary will display a selection icon. Tap each item you would like to delete, then tap the delete or trash can icon.
As a shortcut, you may hold your finger on a diary item for a few seconds (Android) or swipe to the left across an item (iOS) to reveal the "Delete" command for that item.