<prompt> Bhala okuqhubekayo kwalesi sigaba - Ukuphazamiseka nokuphazanyiswa kokulala kusakazeke kabanzi futhi kungaba nemiphumela ebalulekile kubantu abathintekayo kanye nemiphumela yezomnotho nakwezinye izinto emphakathini. NgokukaDkt. Charles Czeisler, oyilungu le-Institute of Medicine futhi onguMqondisi we-Harvard University Medical School Division of Sleep Medicine eBrigham and Womens Hospital, i-National Transportation Safety Board yase-United States ithole ukuthi imbangela eyinhloko engamaphesenti angu-31 yokushayisana kwezimoto ezinkulu ezibulalayo nomshayeli ihlobene nokukhathala nakuba kungavamile ukuhlotshaniswa ngokuqondile nokuphazamiseka kokulala, njengokuphelelwa umoya lapho ulele, nezidakamizwa notshwala njengembangela yesibili engamaphesenti angu-29. Ukuntuleka kokulala nakho kuye kwaba isici esibalulekile ezingozini ezinkulu, njengokuchitheka kukawoyela e-Exxon Valdez, izingozi zenuzi eChernobyl naseThree Mile Island  <response>: nokuqhuma komkhumbi-mkhathi i-Challenger. 