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A couple of years ago, I bought a new digital alarm clock. The numbers are displayed with blue light instead of red. I thought blue light would be more soothing and possibly help me drift off more easily to the land of nod. Boy, was I wrong.
Blue light actually interferes with the production of melatonin, a hormone that induces sleep. TVs and computer screens also emit blue light, which is why you should turn off the electronic gadgets an hour before bedtime, so your body can start producing melatonin. In fact, blue light is so powerful at interfering with our ability to sleep that some truckers use blue lights to keep them awake on long nights on the road. The blue light helps truckers reset their circadian rhythm and tricks them into thinking morning is fast approaching.
I am replacing the blue clock because sometimes I need all the help I can get when it comes to falling asleep.