The purpose of depletion is to allow you to be able to get more carbohydrates into your system before running a marathon or other long race.
Sojourners use a three-day carbohydrate depletion diet beginning one week before the event.
For example, since the St. George Marathon is run on a Saturday, we start our depletion on the previous Saturday afternoon. Tuesday night is a carbo dinner, followed by a Wednesday night Sojourners Pasta Party.