[wheelerof4te]

That's because their brains were rebooting when their body senses low activity.

Kind of like sleep function on laptops. Otherwise, the brain cells would "overheat".

[cududa]

This analogy is wrong on so many levels.

Human sleep would be more aptly related to garbage collection and indexing - neither of which occur when a laptop sleeps. When a computer overheats it throttles performance and sometimes shuts down.

[wheelerof4te]

When a brain overheats, you can easily lose consciousness and be forced to sleep. Wheather you like it or not.

So, not that wrong as you might think.