english: It's fashionable at the moment because what's been shown is that within the brain, a whole raft of genes have been shown to be turned on only during sleep, and those genes are associated with restoration and metabolic pathways.
non_english: Momentalno je moderno, jer se pokazalo da je u mozgu ceo niz gena koji se uključuju samo za vreme spavanja i oni su povezani sa oporavkom