The recommended amount of sleep for adults to maintain optimal health is typically 7 to 9 hours per night. Adequate sleep is crucial for physical recovery, cognitive function, and emotional well-being. Insufficient sleep can lead to a host of health issues, including a weakened immune system, increased susceptibility to chronic conditions, and impaired mental performance. Establishing good sleep hygiene practices, such as maintaining a consistent sleep schedule and creating a restful sleep environment, can help individuals achieve the necessary amount of sleep for optimal health.