Deep sleep

Stage 3 non-REM sleep is the period of deep sleep that you need to feel refreshed in the morning. It occurs in longer periods during the first half of the night. Your heartbeat and breathing slow to their lowest levels during sleep. Your muscles are relaxed and it may be difficult to awaken you. Brain waves become even slower.

REM sleep first occurs about 90 minutes after falling asleep. Your eyes move rapidly from side to side behind closed eyelids. Mixed frequency brain wave activity becomes closer to that seen in wakefulness. Your breathing becomes faster and irregular, and your heart rate and blood pressure increase to near waking levels. Most of your dreaming occurs during REM sleep, although some can also occur in non-REM sleep. Your arm and leg muscles become temporarily paralyzed, which prevents you from acting out your dreams. As you age, you sleep less of your time in REM sleep. Memory consolidation most likely requires both non-REM and REM sleep.

The pineal gland, located within the brain’s two hemispheres, receives signals from the SCN and increases production of the hormone melatonin, which helps put you to sleep once the lights go down. People who have lost their sight and cannot coordinate their natural wake-sleep cycle using natural light can stabilize their sleep patterns by taking small amounts of melatonin at the same time each day. Scientists believe that peaks and valleys of melatonin over time are important for matching the body’s circadian rhythm to the external cycle of light and darkness.
Deep sleep

by ... Zjdbckdnznsjd September 17, 2019

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Window sleep

A need to sleep with the windows open

You suffer from window sleep

by BigIanDries June 18, 2018

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Sleep Button

/slēp ˈbətn/

noun

1. Another term used to describe a butthole (anus). These words can be used interchangeably and in any setting no matter how formal or informal.

1. "Mr. Smith, some of your labs came back positive. We will need to do a thorough ultrasound of your sleep button."

2. "Why are men such sleep buttons???"

3. "Baby like it when I lick dat sleep button"

by Roni Jay June 10, 2017

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sleep-reading

The state of semi-consciousness where one is alternately reading and napping. The person sleep-reading typically has only slight responsiveness to external stimulation or provocation owing to either their sleep state or to their pre-occupation with their reading.

When dad was sleep-reading on the couch, I was able to sneak up and put play-doh in his ears.

by Sleap Reeder May 17, 2021

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The ducks are sleeping

1 You would say this when you are in a boring conversation

2 when someone mentions someone who's boring

Person 1:.....so then when we got to the park......

Person 2: OMG the ducks are sleeping

Person 1: ...so then I called betty...
Person 2: Betty is sooo boring like the ducks are sleeping

by 🦆🤦🙃 July 7, 2019

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