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The original was posted on /r/todayilearned by /u/RealisticBarnacle115 on 2024-11-02 06:31:27+00:00.

Original Title: TIL that the phenomenon of struggling to fall asleep in a new bed is called the ‘dolphin effect’ or ‘dolphin mode.’ Dolphins can fully rest while keeping part of their brain awake, and something similar happens to us when we can’t sleep in unfamiliar surroundings.