It can be a sign of sleep deprivation. On the BBC, Dr Micheal Mosley said that you’ll need a watch, a spoon, and a metal tray ...
Dr Nathaniel Kleitman from the University of Chicago ― also known as “the father of sleep research” ― say all you’ll need is a spoon and a metal tray. The method was devised as part of Dr Kleitman’s ...
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