What stage of sleep is characterized by eye movement stopping, heart rate falling, and body temperature decreasing?

The correct answer relates to Stage 2 of the sleep cycle, which is a critical component of the overall sleep architecture. During this stage of sleep, specific physiological changes occur that contribute to deeper restorative sleep. Eye movement ceases, marking a transition away from the lighter stages of sleep. Additionally, heart rate slows significantly, facilitating relaxation and recovery throughout the body. Body temperature also tends to decrease, which is part of the natural process that prepares the body for deeper sleep.

In the broader context of sleep stages, Stage 2 is often categorized as a period where the sleeper becomes less responsive to external stimuli and begins to experience a more sustained state of rest. This stage represents a progression towards deeper, restorative sleep, setting the foundation for the more profound states that follow, such as Stages 3 and 4, known for their restorative qualities. Each stage of sleep plays a particular role, influencing overall health and recovery.