Abantu abalala ngaphansi kwamahora angu-6 ngosuku noma ngaphezulu kweyisishiyagalolunye bazobe bekhululekile
Ukulala okungcono komuntu omdala kungamahora ayisikhombisa kuya kwangu-8, ngokusho kwesifundo esisha esabekwa uhulumeni wase-US. Lolu cwaningo ngesikhathi esifanayo luhlanganisa ukucabangela kokubhema ngokulala ngokwanele, nokusebenza komzimba obuthakathaka kakhulu - nokusetshenziswa kweziphuzo ezidakayo. Ososayensi baye baqaphela ukuthi ukukhuluphala nezinye izinkinga zempilo ngokuvamile zivela kulabo abangenalo ukulala okunempilo. Konke okutholakele kubonisa ukuthi impilo iyingozi kokubili ukulala ngokweqile futhi mfushane kakhulu, abacwaningi bayaphawula. Iziphetho zososayensi ezivela eNyuvesi yaseColorado zisekelwe ekuhloleni kwabakhulumi abangama-87 000 baseMelika kusukela ngo-2004 kuya ku-2006. Ngesikhathi socwaningo, ezinye izinto, njengokucindezeleka, okungaholela ekudleni ngokweqile, ukubhema, ukulala nokunye izinkinga akuzange kucatshangelwe.