The Ancient Greeks believed that one fell asleep when the brain filled with blood and awakened once it drained back out. Nineteenth-century philosophers contended that sleep happened when the brain was emptied of ambitions and stimulating thoughts. Even today, sleep remains one of the most poorly understood human biological functions.
In Dreamland: Adventures in the Strange Science of Sleep, journalist David K. Randall explores 'the largest overlooked part of your life and how it affects you even if you don't have a sleep problem.' From gender differences to how come some people snore and others don't to why we dream, he dives deep into this mysterious third of human existence to illuminate what happens when night falls and how it impacts every aspect of our days.
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