Good sleep boosts good health. Sleep represents a third of our life, and it has an enormous impact on our productivity, health, overall quality of life and even our relationships. Sleep problems, whether in the form of medical disorders in the fields of neurology or psychology or related to lifestyle, are very common. In America, 70% of adults report that they sleep insufficiently at least one night a month, and 11% of them report that they sleep insufficiently every night. It is estimated that sleep problems affect 50 to 70 million Americans of all ages, genders and socioeconomic classes.