4. Blue lights can prevent melatonin from working properly
If you’ve Googled the causes of insomnia before — and we’re pretty sure you have — then you likely know about the fact that blue light can make it harder for you to get to sleep. Many things can count as blue light.
Everything from the displays on your smartphones to the flatscreen TV in your room emits blue light. If you look at blue light for extended periods of time, your body will start to release melatonin. You see, the brain is tricked into thinking that it’s morning whenever you expose it to blue light.
It thus tries to stay awake since sleeping during the day isn’t normal in human behavioral patterns — otherwise, we would be classified as nocturnal primates. This being the case, you should avoid looking at blue light before you sleep to avoid any interruptions in your sleep or bouts of insomnia.