上集提及，香港八成以上小學生睡眠不足，而亞太區兒科睡眠協會的調查更發現，香港0至3歲的嬰幼兒是全世界最晚入睡：平均的入睡時間為晚上10時17分，比亞洲其他國家遲51分鐘，比起歐洲國家，就遲1.5小時。遲入睡有何壞處？
參考資料
「香港寶寶 夜貓上身」，《明報》，2008年4月1 日。
Carrillo-Vico A, et al., ‘A review of the multiple actions of melatonin on the immune system’, Endocrine, July 2005:189-200.
Joseph S. Takahashi, et al., ‘ The genetics of mammalian circadian order and disorder: implications for physiology and disease’, Nature Reviews Genetics, October 2008:764-775.
Cari Gillen-O’Neel, et al.,’To study or to sleep? The academic costs of extra studying at the expense od sleep, Child Development, 2012.
Yvonne Kelly, Amanda Sacker, et al., ‘Time for bed: associations with cognitive performance in7-year-old children: a longitudinal population-based study”, Journal of Epidemiology & Community Health, 8 July 2013.
