Though the narration is maybe a little simplistic by 21st century standards, this is still quite an interesting short documentary that looks at the importance of sleep and at the significance to a child's development if/when it's interrupted. Adults can often rationalise what is keeping them awake - a pain or a problem that will require sorting in the morning. That's often not the case when we are younger and this feature plays out a few scenarios where a child might be over-wrought or worried or frightened. It might not be such a palpable fear either - perhaps under or over-parenting might be ...