Why It’s Important to Sleep in Complete Darkness

If you have trouble sleeping, light might have something to do with it.

If you have trouble sleeping, light might have something to do with it. A new study out of Northwestern found that sleeping with even a little bit of light is bad for us. Researchers monitored people while they slept by recording their heart rate breathing, hooked them up to an EKG, and watched their brainwave activity. Everyone slept in the dark the first night. Then some slept with a dim overhead light on the second evening. The experts found that when any lights are on, your heart rate climbs and blood sugar rises. The lead author says to make sure you get a good night’s rest, you should turn off all the lights, close your curtains, and think about using a sleep mask.