Avoiding exposure to artificial blue light from screens will allow your body's internal clock to help you prepare for and get into a deeper, restful sleep. (jenniferweinbergmd.com)
This all adds up to a significant amount of time in front of a screen, exposing you to artificial blue light. (mindbodygreen.com)
The artificial blue light from televisions, computers, smart phones and tablets suppresses the production of the sleep hormone melatonin, making the body think it's time to be active, instead of asleep. (mindbodygreen.com)