The stage of sleep that primarily cleans your brain is deep sleep, also known as slow-wave sleep. During this stage, the brain's activity slows down, and cerebrospinal fluid (CSF) flows more freely, effectively flushing out toxins and waste products that accumulate throughout the day.
This process, known as the glymphatic system, is crucial for maintaining brain health and preventing the buildup of harmful substances that can contribute to neurodegenerative diseases like Alzheimer's.
Deep sleep is characterized by:
- Slow brain waves: These waves are large and slow, indicating a state of deep relaxation.
- Reduced muscle activity: Muscles are almost completely relaxed, and the body is still.
- Decreased heart rate and breathing: These vital signs slow down significantly.
While all stages of sleep are important for overall health and well-being, deep sleep plays a vital role in the brain's waste removal process.
