Ngabe babezolala ngehora leshumi nanye, futhi iphupho lafika sekude kakhulu phakathi kwamabili? Ukulala nokulala ubusuku obukhulu kuyinkinga kwabaningi bethu. Kepha nazi izindaba ezinhle: Mhlawumbe ososayensi babambe isisombululo esisha esilula sokuphatha ukulala.
Ucwaningo olunyatheliswa encwadini yamanje Biology, kukhonjisiwe: ukuvezwa isikhathi eside emzimbeni wokukhanyisa ngogesi ngokungabi khona kwelanga kuholela ebunzimeni bokulala nokuvuka.
Isibonelo, lapho ababambiqhaza bocwaningo behamba intaba, isigqi sabo se-circadian sasivame "ukusetha kabusha," futhi amazinga abo e-melatonin (i-hormone elawula isigqi se-circadian) yehla. Ngenxa yalokho, abantu babevame ukulala futhi bavuke ngaphambi kwesikhathi.
Leyo ukuvezwa isikhathi eside elangeni lemvelo isiza amawashi ethu angaphakathi ukuzivumelanisa nezinguquko zonyaka futhi ikuvumela ukuthi ulale ngokushesha futhi uvuke ngaphambi kwesikhathi.
Ngakho-ke, ngesikhathi esizayo lapho uzithola uvaleleke egumbini (isibonelo, ehhovisi), zama ukuthatha ikhefu lokuhamba uhhafu wehora ngaphandle.
Ungafunda kabanzi ngendima yokulala yezempilo yethu kule ndatshana.