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Discription :Recent research suggests that exposure to blue light before bedtime can distort its natural (circadian) rhythm and cause inability to fall asleep.
The cause is a photoreceptor in your eyes, called Melanopsin. This receptor is sensitive to a narrow band of blue light in the range of 460-480nm that can suppress the production of Melatonin - a hormone responsible for healthy sleep cycles.
Experimental scientific studies have shown that a person normally reads on a tablet or smartphone a few hours before bedtime, causing their sleep to be delayed for about an hour.
Twilight may cause the button to install applications to be inaccessible. If it happens: 1) pause Twilight in the notification bar, 2) install your application, 3) activate Twilight. We feel the inconvenience.

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