To activate the blue light filter on your iPhone or iPad (iOS), go to Settings > Display & Brightness > Night Shift. While those apps will help you get better sleep, checking social media or messaging your friends will increase brain activity and will keep you awake longer. Being exposed to this kind of light in the evening confuses our body and reduces the production of melatonin, the hormone responsible for triggering sleep.įilter apps, by removing this blue light, turns your screen to a warmer, yellowish color, which reduces the negative impact of screens on sleep quality.Įven then, we would like to add, that it’s better to stay away from screens before sleep. Screens emit a blueish light, in terms of wavelength, similar to the sunlight at noon. This has been disrupted by the rise of electric light and, more recently, by our constant usage of screens, which has led to a significant deterioration of our sleep quality. Light and temperature, are the two most important factors responsible for regulating our sleep cycle.įor most of human history, our sleep has been guided by the sunlight.
