english: In slow-wave deep sleep, our glial cells rinse cerebral spinal fluid throughout our brains, clearing away metabolic waste that accumulated in our synapses while we were awake.
non_english: U dubokom snu sporih talasa, naše glijalne ćelije ispiraju naš mozak tečnošču iz kičmene moždine i čiste sav metabolički otpad koji se nagomilao u našim sinapsama dok smo bili budni.