You've been lying awake in bed next to your partner for about five minutes. As you hear your partner's breathing become rhythmical, you notice occasional slight twitches in your partner's hand and leg. Most likely, your partner is in:

Question

Quizplus · Accepted Answer

The description of slight twitches in the hand and leg, along with the rhythmical breathing, suggests that the individual is in stage 2 non-rapid eye movement (NREM) sleep. In paradoxical sleep (also known as REM sleep), the body is largely paralyzed and there are no muscle twitches or movements. Stage 4 NREM is the deepest stage of sleep, characterized by very slow brain waves, and individuals are difficult to awaken from this stage.

You've Been Lying Awake in Bed Next to Your Partner