Night mode on mobile phones doesn't make sleep better.
The night shift, which automatically adjusts the colors of the display to the warmest gradations and which aims to contribute to relaxation and to reduce visual fatigue linked to the emission of blue light that is the enemy of sleep, has a function that no longer favors so much actually rest.
This is what emerges from a research by Brigham Young University,
The study included 167 emerging adults between the ages of 18 and 24 who used cell phones on a daily basis. They were asked to spend at least eight hours in bed and wear an accelerometer on their wrist to record sleep activity. People who were assigned to use their smartphones also had an app installed to monitor their phone usage.
Participants were divided into three categories: those who used their smartphone at night with the Night Shift function activated, those who used it without, and those who didn't use it at all before going to bed. It was found that there were no significant differences between the two groups in terms of sleep quality and duration. Then divided into two further subgroups, between those who used the smartphone and those who did not, it emerged that the participants who slept seven hours a night the quality of sleep was better without the use of a mobile phone. While under six hours of sleep "the pressure of the need to rest was so high that there was no effect related to behavior before going to sleep."
