The brain has four stages within the NREM phase. Each stage and phase of sleep plays an important role in our overall health. The first stage of NREM sleep is the transition from wakefulness to sleep.

People on TikTok and other social media say they feel more alert when they have had fewer hours of sleep—but sleep scientists warn this is a false sense of energy ...

This state of decreased activity is also a more effective time for the body to heal injuries and fight infections.

Why you can't sneeze during sleep Your body suppresses sneezes in two different ways, depending on which phase of sleep you're in. Sleep is divided into two phases: non-rapid eye movement (NREM ...

but less time in total in NREM stages. Both mutations were associated with increased times in the wake period. Although no participants indicated that they felt like they had interrupted sleep in ...

Caffeine ingestion leads to a reduction in long-range temporal correlations and also causes an increase in brain complexity, especially during non-rapid eye movement (NREM) sleep. A recent study ...