David Sinick’s Primal Sleep System pdf download! More than sixty million Americans are diagnosed with some kind of sleep disorder every year. All studies conclude that at least one in every four American has insomnia or another sleep disorder. Tens of millions of others who are not suffering from a sleep disorder or insomnia are dealing with some form of sleep deprivation. It is fair to infer that a majority of people, regardless of gender and age, is not getting enough sleep.