You need to break in an orthotic because the orthotic changes the way you walk by changing the alignment of the bones of your foot into a more corrective position.  This change of position, despite being of great benefit to the foot and the rest of the body, changes the way that the muscles move and function in a relatively short period of time.  This change can be dramatic because it causes many muscles that were working too hard to work less hard and conversely, muscles that were not doing their fair share to suddenly snap to and do their share of the work.

We use a gradual, common sense break-in period that generally increases your orthotic wear a few hours each day until you are wearing them comfortably full time within a one to two week period.