Izifundo zokulala zisandula ukwenzeka okoko uninzi lwezinto esizaziyo malunga nokulala ziye zafunyanwa kule minyaka ingama-25 idlulileyo.
Olu luluhlu lwe i-8 eyona nto inomdla kakhulu ngokulala.
1) Ingxelo yexesha elide ngaphandle kokulala ziintsuku ezili-11 (iiyure ezingama-264).
Umntu uphethwe zi-hallucinations, paranoia, ukungaboni kakuhle, kunye nokuthetha kunye nokuphazamiseka kwememori.
2) Ngokufanelekileyo, kuthatha imizuzu eyi-10-15 ukulala emva kokulala.
Oku kuthetha ukuba udiniwe ukulala kakuhle, kodwa ungadinwanga kangangokuba uziva ulele ebudeni bemini.
I-3) Intlekele yeNgingqi yokuThuthwa kweSithuba kunye neNgozi yeNyukliya yaseChernobyl Baye babangelwa ziimpazamo zabantu apho ukungalali kakuhle kudlala indima ebalulekileyo.
4) «iwotshi yendalo yendalo» Oko kuvumela abanye abantu ukuba bavuke malunga nexesha elinye kuye kwabangelwa kukuqhambuka koxinzelelo lwehomoni adrenocorticotropin.
5) Abantu balale ngokomndilili malunga iiyure ezintathu ngaphantsi kwezinye izilwanyana njengeetshimpanzi.
6) Amadada asemngciphekweni wokuhlaselwa ngamarhamncwa ayakwazi ukuwagcina esinye isiqingatha sobuchopho siphaphile ngelixa elinye lilele.
7) Uninzi lwezinto esizaziyo ngokulala sizifundile kule minyaka mithathu idlulileyo.
8) Iingcali zithi enye yeentshaba ezinkulu zokulala ukufikelela kwi-intanethi iiyure ezingama-24 ngosuku.
Kancinci Uburharha ngale vidiyo ukugqiba eli nqaku: