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: Şu anda moda çünkü beynin içerisinde bir sürü genin yalnızca uyku sırasında etkinleştiği ve bu genlerin yenileme