March 12 2007 | By Kyle | Tagged: cycle, gtd, Productivity | 1 comment»
Alan Bellows has posted an article on how unnatural light, such as light from light bulb may create unnatural behavior for humans. It affects our hormone and varies the rhythms of the day and night time which the brain perceives: ... Once humans began to use artificial light to vary the length of the day, the average night's sleep decreased from about nine hours to about seven, and the amount of… Continue reading
March 14 2006 | By Leon | Tagged: cycle, life, sleep | 1 comment»
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