The image below shows the sleep cycle of person with good sleep (red line) compared to a person with poor sleep (blue dotted line). The red line shows a deep and restful sleep pattern, where the blue dotted line shows a more erratic sleep pattern.
Sleep is broken into 2 parts:
REM stands for rapid eye movement, which is where we dream, learn and helps to remember things from the day.3 Non-REM sleep is split into 4 stages. As you move from stage 1 to stage 4, the brain goes from light sleep to deep sleep, your muscles become more relaxed, your heart rate slows down, and breathing becomes more deep and relaxed.3