english: So we've had three explanations for why we might sleep, and I think the important thing to realize is that the details will vary, and it's probable we sleep for multiple different reasons.
non_english: a myslím, že je dôležité uvedomiť si,&lt;br&gt;že okolnosti sú rôzne a je pravdepodobné, že spíme z rôznych dôvodov.