Holidays multiply hours of coexistence, but they also offer a unique opportunity for children to learn to manage conflicts and strengthen their bond.Every summer, a familiar scene repeats for many families. Two siblings who just minutes ago were sharing games and laughter end up arguing about who gets to choose an activity first, about the last ice cream from the freezer, or about deciding what to watch on television. Arguments arise suddenly, often for seemingly insignificant reasons, and can wear down coexistence. Faced with this succession of daily conflicts, many families ask themselves the same question: how is it possible for children to fight so much during a time that should be associated with rest, shared time, and calm?The answer has a lot to do with the changes that holidays bring. During the school year, children spend a good part of the day separated. School, extracurricular activities, and friends offer their own spaces and reduce continuous coexistence. In the summer, on the other hand, many of these structures disappear. Siblings share more hours, more spaces, and more moments of boredom. And when coexistence increases, disagreements also inevitably increase.