Adults should generally aim for 7 to 9 hours of sleep each night to support optimal health and well-being. This amount allows for adequate restoration of the body and mind, enhances cognitive functions such as memory and concentration, and helps maintain emotional stability. Insufficient sleep is associated with numerous health risks, including impaired immune function, weight gain, and increased susceptibility to chronic diseases. Prioritizing quality sleep is essential for performance in daily activities and long-term physical and mental health.