Here's another
article that still talks about the research from Dr Charles Czeisler.
Quote:
A YouGov survey carried out earlier this year found 78 per cent of Britons are exposed to sleep-disruptive blue light from computer, mobile phone and tablet devices before going to bed.
Among 18 to 24-year-olds included in the 2149 adults questioned, this figure rose to an astonishing 91 per cent.
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