Studies show that exposure to blue light inhibits melatonin production, which causes you to get less quality sleep, which can take away from your health and vitality. Protect yourself from blue light at night with blue blocker sunglasses. There are also some apps you can get on your computer and phone to change the light frequencies so they are less harsh at night.
Front: "Red light at night, Dreamers delight." Back: "Block the blue."