Sleep and dreams

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• Did Sleepy Jerry Really Take Over the Internet, or Did Someone Just Say So?Someone declared the takeover. Not everyone got the memo. Sleepy Jerry is the tired cartoon mouse scrolling his phone in bed.
• Do Hibernating Animals Sleep the Whole Time? How Metabolism, Body Temperature, and Sleep Help Them Through WinterAn animal retreats to its den for winter and reappears in spring.
• A researcher’s mind, a cat’s body: what does a bedtime “meow” actually do?Tomorrow is planned.

This week’s archive picks

Each week we rotate in a few older articles from this theme, taking turns through all of them.

• Free facial beauty advice, checked against the researchBeauty professionals often give quite sensible practical advice wrapped in explanations that are simpler and more certain than the science.
• A 30-minute sleep stream became adult observation: Daisuke HoriPut the stream on a 50-inch television and the premise immediately looks strange.
• Still tired after water, food and a nap? Early cold, sleep inertiaYou drank water. You ate. You even had yogurt. Then you slept for five hours in the middle of the day.

All “Sleep and dreams” articles, newest first

Newest first

• Why You See Dream-Like Images Before Sleep — and How to Increase the Chance of Dreaming What You WantSometimes, when you close your eyes before sleep, images start playing in your mind even though you do not feel fully asleep yet.
• Falling asleep around 8 PM does not mean you lack willpowerYou keep falling asleep around 8 PM.
• Part I — What Is Happening in People Who Cry Easily?The age-based rule becomes progressively harder because the benchmark itself rises by ¥10,000 every year.
• Is Sleeping Until 1 PM Oversleeping? Transition Anxiety, Long Return-to-Sleep Dreams, Air Conditioning, and Recovery SleepA person fell asleep around 3 or 4 a.m. and slept until approximately 1 p.m., for a total of about nine to ten hours.
• How Is Hibernation Different from Sleep? Separating an Energy-Saving Body from a Sleeping Brain“Do hibernating animals sleep for months on end?”
• Do Hibernating Animals Sleep the Whole Time? How Metabolism, Body Temperature, and Sleep Help Them Through WinterAn animal retreats to its den for winter and reappears in spring.
• A researcher’s mind, a cat’s body: what does a bedtime “meow” actually do?Tomorrow is planned.
• What Does “NGL I’m Gonna Nap, LMK” Even Want You to Do?“NGL I'ma take a nap LMK” is a message that sounds like a perfectly normal sign-off until its final three letters. Let you know what?
• Why Is the “Sleepy Jerry Took Over the Internet” Post So Funny?The joke in the “Sleepy Jerry took over the internet” post isn't that Jerry looks exhausted.
• Did Sleepy Jerry Really Take Over the Internet, or Did Someone Just Say So?Someone declared the takeover. Not everyone got the memo. Sleepy Jerry is the tired cartoon mouse scrolling his phone in bed.
• “Because He Doesn't Sleep” Isn't an Explanation: How Takasu vs. Hori Became a MemeDr. Mikiya Takasu asked in a YouTube video why Daisuke Hori “keeps lying.” The comments solved this serious question instantly: “Cause: He doesn't sleep.”
• What Happens to Your Dreams and Appetite After a Very Long SleepSleeping extremely long just once doesn't automatically mean something is wrong.
• I Drank Yakult 1000 and Still Slept 10 Hours. Maybe That's Sleep Debt Being Collectedsleep-debt-yakult1000-long-sleep.md
• A nap at Satsuma-no-Yu: Sakurajima was my login bonusAfter a bath at SHIROYAMA HOTEL Kagoshima, I slept for 15–20 minutes in a chair. Waking up to Sakurajima was the best part.
• Still tired after water, food and a nap? Early cold, sleep inertiaYou drank water. You ate. You even had yogurt. Then you slept for five hours in the middle of the day.
• Takoyaki Party, 90 Minutes of Career Advice, Then “I’m Sleepy, Go Home”It was another casual takoyaki get-together, roughly the second time.
• Free facial beauty advice, checked against the researchBeauty professionals often give quite sensible practical advice wrapped in explanations that are simpler and more certain than the science.
• A 30-minute sleep stream became adult observation: Daisuke HoriPut the stream on a 50-inch television and the premise immediately looks strange.
• Can "Rashomon?" pop into your head when sleep-deprived? CreativityImagine seeing a long-haired person with white hair and instantly thinking, “Rashōmon?”
• A Sleepless Day: Health Checkup, a Free Monster Energy, and City Hall PaperworkThe day had already begun with repeated identity-card scans for an online government procedure and another round of explanations at a medical checkup.
• Does a 5 A.M. Walk Count After a Bad Night of Sleep?It's 5 a.m. You slept badly, but the streets are cool and quiet.
• It’s 5 a.m.: the body says “sleep,” the brain says “still open”It is 5 a.m.
• What Does Everyone Actually Do on Their Days Off? — The Truth Behind “Nothing”: Phones, TV, Sleep, and Capybara ModeJapan’s 2025 Cabinet Office survey found that the most common ways people spend free time were sleep/rest (53.7%), TV/DVD/CD viewing (46.8%), hobbies and…
• Was an 18-Hour Sleep Day Recovery Sleep? How to Understand Long Sleep and Changes in DreamsI slept from midnight to 1 p.m., for 13 hours.