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Writer / Sleep & Wellness, Data Verification

Lukas Weber

From Berlin, based in Tokyo · Tokyo Decoded editorial team

From Berlin. Lukas covers how people rest — sleepmaxxing, sleep divorce, cozymaxxing — and checks them against public statistics and surveys. He also runs the team's source verification: a figure that cannot be traced does not stay in the text.

Sleep environment
Rest & minimalism
Home comfort
Statistics & source checks

Articles by Lukas Weber · 15

A small thermometer beside a folded towel in a cold changing room

Lifestyle2026.10.05

Heat Shock and Japanese Bath Safety: Three Numbers for Winter

In Japan, winter bathtub deaths outnumber traffic fatalities. A cost-free-first checklist from official data.

A hot-water bottle and thick socks on a bedroom floor at night

Lifestyle2026.10.02

Cold Feet at Night in Japan: Comparing Four Local Heating Options

Four ways to warm cold feet at night in Japan, compared on burn risk, running cost, and care.

A heater by a window beside a paper electricity bill

Lifestyle2026.09.30

Heating Cost in Japan: The One Formula That Prices Every Heater

Heating cost in Japan comes down to one formula: watts ÷ 1000 × hours × 31 yen. Here's how to price your own heater.

A folded duvet with its quality label tag visible on a bed

Lifestyle2026.09.28

How to Choose a Duvet in Japan: Read the Label, Not the Adjectives

Down, wool, synthetic: three different kinds of warmth. Choose by Gold Label grades and legal labeling, not by feel.

Autumn riverbank grasses seen through a closed window

Lifestyle2026.09.23

Ragweed Season in Japan: Why Your September Cold Won't Go Away

A September cold that lingers may be autumn pollen. What Japan's ragweed season is, and how to handle it at home.

A quiet bedroom at dawn with a small analog clock on a wooden stool

Lifestyle2026.09.18

How Much Sleep Do You Need by Age? Japan's Official Answer

Japan's health ministry sets sleep targets by age. Here's how to turn those numbers into your own schedule.

Phone placed face-down beside a book at night

Lifestyle2026.09.11

Digital Detox: A 5-Step Blueprint to Redesign Your Screen Time

Seven and a half hours a day on your phone. Not abstinence — a staged blueprint to redesign notifications and physical distance.

Quiet bedroom with neatly made bedding at dawn

Lifestyle2026.08.24

Mattress for Back Pain: How to Rethink Where You Sleep 8 Hours

Back pain tops Japan's health complaints. A practical guide to choosing a mattress by firmness, pressure distribution, and breathability.

Lifestyle2026.08.17

How to Choose a Pillow: Height Guide by Sleep Position

Nearly 60% feel their pillow doesn't fit. A practical guide to height and material by sleep position.

Lifestyle2026.08.05

Cozymaxxing: How to Design Comfort at Home (Not Just Feel It)

TikTok's cozymaxxing trend, decoded through Japan's long-standing comfort culture — plus how to design your own.

Quiet bedroom with neatly arranged bedding

Lifestyle2026.08.03

Sleep Divorce: Why Couples Are Choosing Separate Beds for Better Rest

Sleep divorce isn't about relationship trouble—it's about optimizing rest. A three-tier guide for real homes.

A tidy, simple bedroom with morning light by the window

Lifestyle2026.07.13

A Guide to the World's Life-Optimization Trends: Sleep, Rest, and Owning Less

Sleepmaxxing, Bed Rotting, Underconsumption Core — a single map of the world's trends for a better-designed life. Sleep, rest, and belongings, tuned by data rather than by feel.

A dark, quiet bedroom with a neatly made bed

Lifestyle2026.06.29

Sleepmaxxing 101: How the World Stopped Guessing and Started Optimizing Sleep

Sleepmaxxing has topped 80M views on TikTok. Here's the science of optimizing sleep—seen from Japan, where people sleep the least in the developed world.

Minimal shelf with well-used everyday items

Lifestyle2026.06.11

Underconsumption Core: Why Buying Less Is the New Flex

TikTok's #underconsumptioncore hits 230M views. The new flex? Buying less—and Japan's been doing it forever.

A clean bedroom with soft natural light — the intentional rest of Bed Rotting

Lifestyle2026.06.06

Bed Rotting: Is Lying in Bed Doing Nothing Actually Good for You?

Spending intentional time in bed doing nothing was Dictionary.com's notable new word for 2023. Gen Z calls it Bed Rotting. Neuroscience calls it Default Mode Network activation. Japan calls it 'tasogare.'