Sleep is one of the most important factors that help people maintain their physical and mental health. The body needs rest after a long day of work or study, and sleep gives the body the chance to restore energy and regain activity. Good sleep also helps the brain organize thoughts and improve concentration and memory. Lack of sleep negatively affects human health, as it may cause tiredness, fatigue, and poor attention, in addition to increasing stress and nervousness. Staying awake for long periods may also lead to health problems such as weak immunity and high blood pressure. One of the major benefits of sleep is that it improves mood and increases productivity and work performance. Therefore, doctors recommend getting enough hours of sleep every day, especially for students and workers who need focus and energy during their daily activities. To have healthy sleep, people should avoid using phones and smart devices before bedtime, organize sleeping and waking times, and create a quiet and comfortable sleeping environment. In conclusion, sleep is not only a form of rest, but also an essential element for body health, mental well-being, and daily activity. Therefore, it is important to take care of sleep to maintain a healthy and balanced life. Mrs. Reham Safaa Najem University of Al-Mustaqbal – The First and Leading Private University