I painted my bedroom walls deep red just to follow the trend: on the very first night, I understood what that colour was doing to my sleep

I painted my bedroom walls deep red just to follow the trend: on the very first night, I understood what that colour was d...

Following the viral color-drenching trend, one writer painted her bedroom walls deep red only to discover her heart racing at midnight. What does this trending color actually do to your body—and nervous system—when the lights go out?