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Science is now proving what people knew previously: there is a link between depression and sleep. After studying pairs of twins, scientists can now prove the fact. People getting 7-9hrs of sleep were least likely to get depressed, at only 27%. People getting about 5hrs of sleep were the highest, at 53%. However, unusually, people getting 10hrs of sleep reported a 49% risk for depression. Interesting, huh?

“Studies Find New Links between Sleep Duration and Depression.” American Academy of Sleep Medicine – Association for Sleep Clinicians and Researchers, 8 Nov. 2017, Link Between Depression and Lack of Sleep

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Yep! That caught your attention, didn't it? Most teenagers believe (or actually have) insomnia.
Insomnia is the 4 Hards:

hard to fall asleep

hard to stay asleep

hard to sleep in

hard to go back to sleep after waking

“Insomnia.” Mayo Clinic, Mayo Foundation for Medical Education and Research, 15 Oct. 2016, Insomnia

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This is actually unpleasant. Narcolepsy is when people suffer from uncontrollable daytime drowsiness, and randomly just drop off to sleep, no matter what they are doing.

“Narcolepsy.” Mayo Clinic, Mayo Foundation for Medical Education and Research, 6 Nov. 2020, Narcolepsy

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This is when people quit breathing in their sleep. Their body wakes them up every time they run out of oxygen. Due to all the lost sleep, they end up pretty cranky.

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recharge body physically

rebuild neurons

forming and renewing pathways in the brain

keeps emotions in check

keeps metabolism running

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Without sleep, every single teenager will end up a little loopy. Their cognitive (brain) abilities will greatly diminish. The neurons (message system) will be slowed, like an Iphone that hasn't been restarted in 10 years. Gradually, the intrepid no-sleep-explorer will descend into a dark realm, and eventually just lose consciousness.

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Despite the general belief that sleep isn't needed by teenagers, it is. In fact, teenagers should be after sleep like Toothless is after that fish. Sleep is a vital thing that keeps your inner noggin in working condition, ready to figure out new ways to get out of school.

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I know you consider school often boring. But bear with me here, cause this'll actually be interesting. Hopefully...

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Ok, don't get too discouraged with all the writing here (I can see that teenage look!) Just read it fast, and pretend you understood, yeah? Great.
Rapid Eye Movement (REM) sleep occurs throughout the night at intervals. This is when most of the time when people dream. People dream every night, but they don't always remember it. Their heart rate and breathing increases, and their eyes rapidly flicker back and forth as if watching a TV show. This occupies about 20% of an adult's total sleeping time.

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During this time, people are least responsive to outside stimuli. Stage 3 and 4 are most likely to occur during the first half of the night.

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This stage has even slower brain waves! They have higher peaks and lower valleys.

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This stage has slower brain waves, and it becomes increasingly difficult to wake somebody entering sleep. For people in theirs 20s (not you, teens) this stage makes up about half their total sleep.

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This theory claims that dreams are nothing more than people's conceptions, which are all based on the waking world. Not too complicated, huh?

“The Case for a Cognitive Theory of Dreams.” Dreamresearch.net, Cognitive Citation

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To put it simply, this theory explains that dreams are our brains' attempts to make sense of the random firing of neurons which happens during sleep. This would certainly explain why dreams can be so weird!

Courses, The Great. “Why Do We Dream? from Freud to Activation-Synthesis Theory.” Wondrium Daily, 16 May 2020, Why do we Dream?

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This is a very "smart" idea. It involves a bunch of fancy words, but you, as a teenager who is lucky to have read this far, needs to know this: this theory says we organize information and put short-term memories into long-term memories during dreaming.

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So, some crazy guy a long time ago decided everything pertained to sex. Therefore, his obvious conclusion about dreams also included sex. He said everything in dreams were symbols, and most all the symbols stood for something sexual. He believed dreams were our subconscious fulfilling wishes that we couldn't live out in our waking hours (such as killing our father or having intercourse with our mother). So yeah, he was a bit strange.

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This is the time when you're just about to fall asleep, and your sibling begins screeching at the top of their lungs and wakes you up. Normally, it's called "dozing off" but if you want to sound fancy, you can says, "a stage of transition into sleep, including low-amplitude brain waves, and lasting only a few minutes".