According to a research study by Harvard, blue lights can actually help people fight fatigue and stay more alert and awake at night. Unfortunately, the same can be giving you trouble with sleep.

With today’s technology, there are lights on 24/7, many of which are blue LED lights. Just looking at my own setup, I have blue light being emitted from my computer, speakers and router (not to mention the other lights coming from my monitor and modem). Being able to turn off or somehow cover all sources of light before you go to sleep can help you get to sleep much faster and experience a deeper sleep.

Ideally, you should limit the brightness of the lights around you at least an hour before you go to sleep. Artificial lighting tells our brain that it is not yet night time and we should not be tired. This causes our body to stay more alert and awake at a time when we should be feeling tired and sleepy.