Study: Sleeping with a night light could seriously mess up your heart health & more - Life

And it could cause a whole host of problems.
This could lead to some problems.

Sacrificing sleep? Here's what it will do to your health

Healthy sleep: What is it and are you getting it?

Why your sleep and wake cycles affect your mood - Harvard Health

What Does Staying up all Night and Sleeping all Day do to the Body?

Mental Health and Sleep

What happens when you don't get enough sleep? Blood samples show heart risks.

Irregular sleep may be harmful to your heart, study finds

Sleeping with even a little light can be unhealthy, study finds : Shots - Health News : NPR

8 Health Benefits of Sleep

How dangerous is insomnia? How fear of what it's doing to your body can wreck your sleep

Sleeping With Even a Dim Light Can Raise Blood Sugar and Heart Rate, Smart News

Exposure to any light during sleep linked to obesity, serious health issues, study finds

Can Napping Make Up for Lost Sleep? What to Know About Health Benefits - The New York Times