It’s important to remember that we don’t go from being awake to being in REM sleep rather, we must pass through all the stages of NREM first. Even though this stage is the most similar to being awake, it’s the furthest point from wakefulness in terms of the sleep cycle.Blood pressure, heart rate, and breathing all begin to increase This is when, as the name suggests, our eyes dart up and down and all around, and is most likely when dreaming occurs. REM sleep: At the end of our cycle, we actually enter a light stage of sleep. Your blood pressure, heart rate, and breathing are all very low. Stage 4 is “deep sleep,” a stage that doesn’t want to be disrupted.Stage 3 is “slow wave sleep.” Here, blood pressure drops, heart rate further slows, and our breathing becomes slower and more rhythmic.
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