Do You Know? Adults need about 1-2 hours of deep sleep per night.

Sleep Tracker DB

<aside> <img src="/icons/help-alternate_gray.svg" alt="/icons/help-alternate_gray.svg" width="40px" /> What Is Deep Sleep?

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Deep sleep, also known as slow-wave sleep, is a stage of sleep characterized by slow brain waves and a decreased level of consciousness.

<aside> <img src="/icons/help-alternate_gray.svg" alt="/icons/help-alternate_gray.svg" width="40px" /> Why Is Deep Sleep Important?

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During deep sleep, the body undergoes several physiological changes, including changes in heart rate and breathing.

• Heart rate: During deep sleep, the heart rate slows down and becomes more regular. This is due to the release of a hormone called melatonin, which has a calming effect on the body and helps regulate the sleep-wake cycle.
• Breathing: Breathing also slows down during deep sleep, becoming more regular and shallow. This allows the body to conserve energy and restore itself.

Additionally, during deep sleep, the body's temperature drops and muscle activity decreases, which helps to promote physical recovery and growth.

This is why deep sleep is considered to be the most restorative stage of sleep, as it allows the body to repair and rejuvenate itself.

The lack of deep sleep can lead to fatigue and decreased cognitive function.