My friend has two children and her in laws owned a chemist shop, the father-in-law was (retired now) being a pharmacist. Whenever her children stayed overnight at the in laws, they slept from 8pm until 10am. Yes, you read that right!! Mr. Pharmacist administered a small dose of "sleep 14 hours without waking me up" medicine and a good night was had by all.
I was wondering how the parents could leave them, with the doors unlocked, a pool outside and the apartment next to the road, without worrying that one wouuld wake and wander off. Well, maybe the children were sedated...as the parents were Drs. It would explain that side of things to me...........