Coty adds that furniture with light-colored fabrics will also help lighten a dark room. "They don’t necessarily need to be white, but you can incorporate a light beige sofa to brighten the ...

The dim light entered the eyelids and disrupted sleep despite the fact that participants slept with their eyes closed, said study author Dr. Phyllis Zee, director of the Center for Circadian and ...

On the first night, all participants slept in a very dark room. On the second, half slept with a lighting level of 100 lux, equivalent to keeping a TV or bedside light on or having a bright street ...