E-books 'damage sleep and health,' doctors warnIf you curl up under the duvet with an e-book for a bedtime read then you are damaging your sleep and maybe your health, US doctors have warned. A team from Harvard Medical School compared reading paper books and light-emitting e-readers before sleep. They found it took longer to nod off with a back-lit e-reader, which led to poorer quality sleep and being more tired the next morning. Original Kin
就寝前の読書にタブレットは厳禁!?
