Irregular bedtimes may affect children's brains

Sleep research finds that lack of routine, which might impair early development, affects girls more than boys.  Irregular bedtimes may disrupt healthy brain development in young children, according to a study of intelligence and sleeping habits.  Going to bed at a different time each night affected girls more than boys, but both fared worse on mental tasks than children who had a set bedtime, researchers found.

Child jumping on bed