Alot, but not as much as I used to. More during the summer when I'm in thinner diapers, but still at least four times during the day. If I'm exercising or running errands and staying hydrated on a really hot day as many as eight changes, but usually its only that many if I'm throwing some pullups into my routine for a run or a quick trip to the store in loose shorts. During the winter maybe three times a day. On a really lazy weekend with boosters I would sometimes only need to change once in the middle of the day.