Jun 28, 2015 on National Geographic Channel at 9:00 PM


The average adult spends more than 220,000 hours - or roughly 25 years - in bed sleeping. That's one third of your life spent in slumber!1 But what exactly is sleep - and why do we spend so much time doing it? In what could be our most ambitious Brai... (more)n Games experiment ever, we keep 3 volunteers awake for 36 hours in order to answer just that.

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Season 6 Episode 2

Jun 28, 2015

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Season 6 Episode 4

Jun 28, 2015