english: Other waste products  also build up in the brain, and if they're not cleared away, they collectively overload the brain and are thought to lead to the many negative symptoms of sleep deprivation.
non_english: Druge otpadne materije se takođe gomilaju u mozgu i, ako se ne počiste, sveukupno preopterećuju mozak i veruje se da vode do mnogih negativnih simptoma nesanice.