Which of the following statements about Non-REM sleep is true?

Non-REM sleep is characterized by several physiological changes, one of which is the typical decrease in heart rate and blood pressure. During this phase of sleep, the body enters a state of rest and recovery, which includes a reduction in metabolic activity. This is crucial for various restorative processes, such as tissue growth and immune function.

In contrast, vivid dreams are more commonly associated with REM sleep rather than Non-REM sleep, as most of the dreaming occurs during this stage. Additionally, muscle activity is generally decreased in Non-REM sleep; in fact, it is when the body experiences a temporary paralysis of most muscle groups, which helps prevent individuals from acting out their dreams. Sleepwalking, a phenomenon that can occur during sleep, usually happens in Non-REM sleep but is not exclusive to it, as brief awakenings can sometimes happen in other sleep phases as well.

Understanding these aspects of Non-REM sleep can enhance the comprehension of sleep cycles and their respective characteristics.