The average adult human needs seven to nine hours of sleep each night. Cats need 16 hours, giraffes only need four, but we as humans need to spend one third of our lives sleeping, and we have to make that a priority. What we know is that just a generation and a half ago, our grandparents generation people slept about an hour longer than they do now. And no changes have happened in evolution, but now we have a 24-7 society. We're so busy and there's something to be done at all times. We need to get that seven to nine hours. The number one sleep disorder in America is literally called insufficient sleep syndrome. And it's making us sick.