Iingxaki zokulala, i-melatonin iba sisisombululo Ngobomi obukhawulezayo kunye nomsebenzi woxinzelelo oluphezulu kuluntu lwanamhlanje, abantu bajongene neengxaki ezininzi ebuthongweni. Iingxaki zokulala ziye zaba yingxaki eqhelekileyo kwihlabathi liphela, kwaye imelatonin, njengehomoni yendalo, ithathwa njengeyona ndlela isebenzayo ...
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