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A comment on Sleep helps to repair damaged DNA in neurons, scientists find. Parent comment

Re:Sleep helps to repair damaged DNA in neurons, scientists ... by thaumasiotes on Tuesday March 05, 2019 @12:54PM (#19312477)
The downsides of sleep are more severe for aquatic air-breathers, and, as some other comments have already pointed out, it appears to have already been eliminated in that case.
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Re:Sleep helps to repair damaged DNA in neurons, scientists ... by gotocake on Tuesday March 05, 2019 @01:14PM (#19312693)
It’s not eliminated, it’s bicameral. Dolphins do sleep, they just do so one half of their brain at a time, which is... so cool.
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Re:Sleep helps to repair damaged DNA in neurons, scientists ... by thaumasiotes on Tuesday March 05, 2019 @02:41PM (#19313544)
This is only true if you redefine "sleep" in a certain technical way. This redefinition is supported by phenomena such as the dolphin closing one eye during that eye's half-sleep cycle, but it is not obviously appropriate in all contexts.
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