Sleep deprivation is defined as any significant loss of sleep resulting in problems with concentration and irritability. Insufficient sleep has been linked to increased risk of illness, accidents, chronic disease and negative emotions. Sleep is important for restoring the body and is essential for cognitive functioning, especially in developing children and adolescents where lack of sleep can impair development and behavior. Poor sleep is also associated with lower academic performance in college students and increased risk of accidents in shift workers due to fatigue.