Occurs primarily in the first half of the night. It serves as a "sensory blackout," during which the brain moves information from short-term to long-term storage and clears out "mental trash".
To improve sleep quality and quantity, you can follow these strategies based on the Why We Sleep Summary and expert advice from YouTube reviewers : Why We Sleep by Matthew Walkerrar
Matthew Walker’s Why We Sleep argues that sleep is a critical biological necessity, not a luxury, influencing every major system in the body and brain. Walker, a professor of neuroscience, emphasizes that routinely getting less than 7–9 hours of sleep leads to severe cognitive impairment and life-threatening health risks. Occurs primarily in the first half of the night
Short sleep makes fat cells less responsive to insulin, which can lead to pre-diabetic blood sugar levels within just one week of moderate deprivation. a professor of neuroscience