Sleep is a natural part of being human. Even animals need this form of recharging, and all mammals, reptiles and birds require sleep. It is a vital part of maintaining focus, good health and vigor.
The National Institute of Neurological Disorders and Stroke reports more than 50 million Americans have a long-term sleep disorder, with 20 million more suffering from occasional problems falling and staying asleep. The Centers for Disease Control and Prevention report a sleep behavior survey in which more than 37 percent of respondents reported falling asleep during the day at least once in the previous month.
Such a lack of sleep has been linked to increased accidents on the road and in industries, more paperwork errors, and even fatalities from accidents or inattention.
Additionally, Harvard Medical School did a study that claimed one in four people suffer from some form of insomnia for three nights a week or more.