The question isn&#x27;t &quot;how would I ever sleep that much&quot;; it&#x27;s &quot;what am I going to do with my time if it&#x27;s too dark to see?&quot; That most people in the Medieval era couldn&#x27;t do anything <i>productive</i> for more than 9 hours a day in winter is a given. The question is just when and how they slept within that 14-hour block of unproductive hours.