Slow-Wave Sleep

NREM Stage 3 is characterized by delta waves (0.5-2 Hz). It is the most restorative phase of sleep for physical tissue repair and glymphatic clearance.

Hormonal Cascade

70% of daily Growth Hormone is released here.

Cognitive

Clears amyloid beta plaques associated with Alzheimer's.

Normative Data

MetricObservation
Age 20-3020% of total sleep
Age 50+10-15% of total sleep

Clinical FAQ

How do I increase it?

Lower core body temperature and eliminate evening alcohol/caffeine.

Internal References