deep sleep
"Deep sleep" is a critical phase of the sleep cycle, essential for physical and mental restoration.
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Definition
B2Sleep Medicine
(technical, scientific)A stage of non-rapid eye movement sleep characterized by slow brain waves, low body temperature, and reduced heart rate.
Example
- During deep sleep, the body's repair processes are most active.
B2General Health
(common)A period of sleep where the body and mind undergo significant restoration, making it hard to wake up.
Example
- She felt refreshed after a night of deep sleep.
Similar
Terms that have similar or relatively close meanings to "deep sleep":
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