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6th June 2019
11:21am BST
Glenn Landry, a postdoctoral research student at Canada's University of British Columbia, suggests wearing sunglasses for two hours before bed every night.
"We have artificial sources of light available to us 24 hours a day," Landry told CBC News.
"We've got our laptops with us, and we're doing email and we're watching TV late at night. And so we're getting light at night [which] impacts our circadian rhythms, our daily biological rhythms. "Beginning at eight at night, two hours before [the] time I want to go to bed, I wear sunglasses. Not because my future's so bright, but because I'm trying to avoid light. I'm trying to tell my clock that this is the end of the day."
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