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.

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

Light exposure during sleep may harm your health, study says – The Hill

Do Sleep Trackers Work? What Experts Say - The New York Times

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

Even Moderate Ambient Light During Sleep Is Harmful – Increases Risk for Heart Disease and Diabetes

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Light during sleep linked to conditions that harm the heart - Harvard Health

Oversleeping: Signs, Complications, and Outlook

How does sleep affect your heart rate? - Harvard Health

How a Consistent Sleep Schedule Benefits Your Health - The New York Times

Sleeping with even a small amount of light may harm your health, study says