Scientists from Japan conducted a study to find out what happens to the human body when a person sleeps with the light on.
Volunteers aged 63 to 84 years took part in the study.
This was reported by solenka.info .
As it turned out, less than half of them were in complete darkness for 5 hours.
As for the rest, they always fell asleep with some kind of light.
It could even have been the light from a TV being turned on.
It was the second category that most often spoke of poor health: high blood pressure, problems with excess weight and diabetes.
Also, participants who slept with the light on did not feel rested and complained of headaches.
In addition, scientists explained that light during sleep disrupts the human life cycle. This is especially dangerous for the elderly.
Therefore, you should use dark and thick curtains or special masks.
