As we sleep, our brain moves through four stages and two phases: non-rapid eye movement (NREM) and rapid eye movement (REM). The brain has four stages within the NREM phase. Each stage and phase of ...
Ever wonder why some mornings you wake up ready to go, and others you feel like a zombie? The difference often comes down to when you wake up during your sleep cycle, and that’s exactly what a sleep ...
Earlier studies have identified a relationship between sleep and Alzheimer’s disease. A new study looks in detail at sleep phases, brain changes, and Alzheimer’s disease. According to the results, ...
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