From a medical standpoint, Navab said there isn't an issue with segmented sleep. "I don't think that's an issue as long as you're able to go back to sleep and get sufficient hours of sleep," Navab ...

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In the 8th-Century BC epic poem, the Odyssey, Homer refers to the ‘first sleep’, in what is one of the earliest reference to segmented sleep. Other references have since been found from across ...