This is because when it gets dark, our bodies release a hormone called melatonin that helps make us sleepy, and
pre-bedtime bright light exposure — especially exposure to the blue light emitted by screens large and small — weakens melatonin release.
You'll want to
avoid bright light exposure three hours before your desired bedtime, particularly from melatonin - suppressing blue light (found in LED light bulbs, bright screens, and electronic devices).
«Our main finding was that following
daytime bright light exposure, evening use of a self - luminous tablet for two hours did not affect sleep in young healthy students,» study first author Frida Rangtell said in a university news release.
Daytime
bright light exposure, especially in the morning, helps regulate hormones, cortisol and circadian rhythm.
I guess it depends on the person, but it seems like about 45 minutes after
that bright light exposure, melatonin will try again to start secreting some more or so.
Reducing
your bright light exposure at night and sleeping in darkness can increase your odds to get pregnant.
Sneezing in response to
bright light exposure (such as stepping out into the sunshine after sitting in a dark theater) is called photic sneeze reflex; not only is the trait inherited genetically, but your genes even determine how many times you'll sneeze in response to the light.
Around 18 - 35 percent of the population is affected by «photic sneeze reflex» where an individual sneezes in reaction to
bright light exposure.