1. Reasons why babies kick the quilt while sleeping It is a very common phenomenon for babies to kick the quilt while sleeping. The main reasons are as follows: First, the baby\’s body develops rapidly and needs to consume a lot of energy, and sleep is an important way to restore physical strength. Therefore, the quilt is constantly kicked during sleep to maintain body temperature and comfort. Second, the baby is already accustomed to being in a narrow space when he is in the mother\’s womb.