There’s an age-old reason why reading a book in bed is part of so many children’s nighttime routines: reading puts us in the right headspace for a good night’s sleep. Similar to how physical exercise strengthens the body, cognitive exercises — like reading — are important to strengthen the mind. Strong cognitive function can help reduce mental chatter, which in turn, helps us drop into a quiet state of relaxation. The act of engaging our imaginations with a paperback allows us to enter an altered state of consciousness. "While our mind is quite literally lost in the word, our body gets the chance to rest and relax." And when the body is more relaxed, it becomes easier for us to wind down and drift off. Read more on the Headspace website.