What is the relationship between children's sleep quality and health?

Children's sleep quality is closely related to their health. Good sleep has the functions of supplementing human energy, enhancing self-resistance, promoting children's normal metabolism, growth and development, and making their body and mind fully rested. It is found that the length of sleep is significantly related to children's cognitive function scores and mental health scores, such as depression scores and anxiety scores. Children with longer sleep duration are generally better than children with shorter sleep duration in cognitive ability and mental health.