Examlex
Which of the following is a physical property?
REM Sleep
Rapid Eye Movement (REM) Sleep is a stage of sleep characterized by vivid dreams, increased brain activity, and rapid movement of the eyes.
Dream Recall
The process of remembering and being able to describe dreams after waking from sleep.
Stress Hormones
Biochemicals released in the body in response to stress, notably including cortisol and adrenaline, which prepare the body to cope with threatening situations.
Immune System
The complex network of cells, tissues, and organs that work together to defend the body against attacks by foreign invaders, such as viruses and bacteria.
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