Daniela Grimald News Today

Before going to bed, close the blinds, draw the curtains, and turn out all the lights. Even modest ambient brightness during nighttime sleep, as compared to sleeping in a poorly lit room, affects cardiovascular performance and raises insulin resistance the next morning, according to new Northwestern Medicine research

Ensure you turn the lights off and close the blinds before bed Illinois scientists have urged after finding even moderate amounts of light while sleeping increases heart activity to daytime levels.