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Total lunar eclipses always occur
Night Terrors
A sleep disorder causing feelings of terror or dread, and typically occurs during NREM sleep, often leading to loud screams and physical movement.
NREM Stage 4 Sleep
The deepest phase of non-rapid eye movement sleep, characterized by slow brain waves and limited physiological activity, essential for physical restoration.
Sleepwalking
A sleep disorder causing people to get up and walk around during deep sleep, often with no memory of the event.
REM Sleep
A stage of sleep characterized by rapid eye movement, increased brain activity, and vivid dreams.
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