Ukukhanya okuluhlaza okwesibhakabhaka kukhishwa ngomakhalekhukhwini, amakhompyutha, ama-e-readers, amathelevishini ngisho nezibani zomgwaqo emadolobheni amaningi. Ngalesi sizathu, iningi labantu livuleleka kulo nsuku zonke.
Ukukhanya okukhulu kakhulu kwalokhu okufakelwayo kungaba nemiphumela emibi ezingxenyeni eziningi zempilo yomuntu, ikakhulukazi ebusuku. Kakhulu lokho abanye ochwepheshe abanqikazi ukukuveza njengenkinga yempilo yomphakathi ekhulayo.
Ukukhanya kungukuvumelanisa okubaluleke kakhulu kwesigqi somuntu sokujikeleza. Amaseli akwi-retina aphendula ukukhanya kwelambu elifushane, okuvela esibhakabhakeni esingenalifu esiluhlaza, kodwa futhi nokukhanya okuluhlaza okwesibhakabhaka. Njengoba imisebe yokukhanya ihlasela lawa maseli, ubuchopho buyeka ukukhiqiza i-melatonin ukugxila kuma-hormone afana ne-cortisol ne-ghrelin, ezisivusayo zisilambise.
Kunobufakazi obuphakamisa ukuthi ukuvezwa kokukhanya okuluhlaza okwesibhakabhaka bekungeke kubangele izinkinga zokulala kuphela, kodwa futhi nokuzuza kwesisindo, ukudangala, isifo senhliziyo, nomdlavuza. Kuze kube manje ubudlelwane bezimbangela nomphumela abukakaqinisekiswa, kepha kochwepheshe abaningi, kunemininingwane ethusayo ngokwanele ukuba kuqinisekiswe ukuthi kuthathelwa izinyathelo ngokushesha.
Uma ufuna ukuvimbela umonakalo obangelwa ukukhanya okuluhlaza okwesibhakabhaka, yenza njengase-International Space Station, lapho afiphaza khona bese ehambisa ukukhanya kubude obude obude njengoba kusihlwa. Cabanga ukufiphaza amalambu futhi uhlale kude nezikrini eziluhlaza okwesibhakabhaka ebusuku. Sebenzisa izihlungi zokukhanya okuluhlaza okwesibhakabhaka ezingilazini zakho noma uzifake ngqo kumadivayisi kagesi njengamafoni namaphilisi. Ungashintsha futhi amasethingi wokubonisa abe amathoni afudumele. Ukushintsha amalambu okulala ngamalambu amade amade, nokutshala imali kumask yokulala uma amalambu emigwaqo ekhanya efasiteleni lakho nawo aphakathi kwamasu asetshenziswa kakhulu.