Сколько часов в сутки должен спать человек? (Сергей Тармашев)

This is an excerpt from Sergey Tarmashev’s answers to reader questions about his book "Ancient. Prehistory." The question asks whether it makes sense to schedule sleep in 1.5‑hour cycles, based on the author’s claim that one hour of the Shining equals 1.5 hours for us and that humans have a natural 1.5‑hour cycle. The answer discusses the idea that sleeping in multiples of 1.5 hours could be beneficial, but also questions whether this approach truly affects sleep quality.