Choosing to apply the Tune-Up features here will apply the information automatically when submitting from the Inbox to the Digest. You may always override this preference by choosing to edit the activity.
* GPS Corrections - cleans up location information that can sometimes produce erroneous values
* MB Gravity - cleans up elevation information by cross-referencing the location with an elevation dataset
Please note that MB Gravity is not necessary with the Edge 305 as it has a built in Barometric Altimeter.