Night mode on mobile phones doesn't make sleep better.
The night shift, which automatically adjusts the display colors to the warmest gradations and which aims to contribute to relaxation and 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, published in Sleep Health.
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 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 was found that the participants who slept seven hours a night had better sleep quality without the use of mobile phones. 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." (HANDLE).
