https://kaifuku-mag.com/en/ KAIFUKU is a recovery culture magazine for hard workers who are bad at resting. Daily reads on the culture and science of training, sauna, sleep and rest. en https://kaifuku-mag.com/en/2026-08-27-training-junban/ https://kaifuku-mag.com/en/2026-08-27-training-junban/ Wed, 26 Aug 2026 21:00:00 GMT If you are doing strength and cardio on the same day, putting the strength work first tends to give better lower-body numbers — several meta-analyses report results pointing that way. You arrive at th… https://kaifuku-mag.com/en/2026-08-27-recovery-tourism/ https://kaifuku-mag.com/en/2026-08-27-recovery-tourism/ Wed, 26 Aug 2026 21:00:00 GMT In a survey of 100,000 people in Japan, 33.0% said they travel in order to recover from fatigue. Five years ago the figure was 27.4%, so that is a rise of 5.6 points. On a late-summer express train, t… https://kaifuku-mag.com/en/2026-08-27-oofos-popup/ https://kaifuku-mag.com/en/2026-08-27-oofos-popup/ Wed, 26 Aug 2026 21:00:00 GMT The recovery footwear brand OOFOS is opening a limited-run, company-operated store in Shimokitazawa, Tokyo. https://kaifuku-mag.com/en/2026-08-27-hrv/ https://kaifuku-mag.com/en/2026-08-27-hrv/ Wed, 26 Aug 2026 21:00:00 GMT Heart rate variability (HRV) is the variation in the intervals between heartbeats. Hear "resting heart rate of 60" and you picture a beat landing exactly once per second. A real heart is nowhere near … https://kaifuku-mag.com/en/2026-08-27-asa-protein/ https://kaifuku-mag.com/en/2026-08-27-asa-protein/ Wed, 26 Aug 2026 21:00:00 GMT With the same daily amount of protein, weighting it toward the morning and weighting it toward the evening produced different gains in muscle — that is what a research team including Waseda University… https://kaifuku-mag.com/en/2026-08-26-suwarisugi/ https://kaifuku-mag.com/en/2026-08-26-suwarisugi/ Tue, 25 Aug 2026 21:00:00 GMT Work at a desk, travel by car, sink into the sofa at home. Look back on the day and there are days you've barely stood at all. It turns out this is the average Japanese day. In a study by a research t… https://kaifuku-mag.com/en/2026-08-26-sleep-score/ https://kaifuku-mag.com/en/2026-08-26-sleep-score/ Tue, 25 Aug 2026 21:00:00 GMT You wake up and check the score before you check how you feel. 82. Not bad. You start to feel like you slept well — wait, isn't that backwards? A few years into the era of sleep-as-numbers, the ranks … https://kaifuku-mag.com/en/2026-08-26-shakai-jisaboke/ https://kaifuku-mag.com/en/2026-08-26-shakai-jisaboke/ Tue, 25 Aug 2026 21:00:00 GMT You haven't been abroad, yet on Monday mornings your body feels heavy, as if you were jet-lagged. The phenomenon has a name: social jetlag. Up at 6 on weekdays, up at 10 on weekends — to your body clo… https://kaifuku-mag.com/en/2026-08-26-sauna-jinko/ https://kaifuku-mag.com/en/2026-08-26-sauna-jinko/ Tue, 25 Aug 2026 21:00:00 GMT "The sauna boom is about over, isn't it?" We've heard that conversation more than once this past year. It's true that magazine features have thinned out, and news of new openings has lost its earlier … https://kaifuku-mag.com/en/2026-08-26-nezake/ https://kaifuku-mag.com/en/2026-08-26-nezake/ Tue, 25 Aug 2026 21:00:00 GMT A drink on a sleepless night really does feel like it works. Your body warms, your mind loosens, and before you know it you're out. The tricky thing about the nightcap — nezake, the Japanese custom of… https://kaifuku-mag.com/en/2026-08-26-nettaiya-aircon/ https://kaifuku-mag.com/en/2026-08-26-nettaiya-aircon/ Tue, 25 Aug 2026 21:00:00 GMT August is nearly over, and the nights still won't cool down. Turn the air conditioner off before sleep, or leave it running? This household argument replays every year around this time — and there is … https://kaifuku-mag.com/en/2026-08-26-nerumae-stretch/ https://kaifuku-mag.com/en/2026-08-26-nerumae-stretch/ Tue, 25 Aug 2026 21:00:00 GMT No form of training gets less respect than stretching. For most people it's frozen in memory as the opening act before a lifting session, or the warm-up drills from gym class. I was no exception — for… https://kaifuku-mag.com/en/2026-08-26-micro-break/ https://kaifuku-mag.com/en/2026-08-26-micro-break/ Tue, 25 Aug 2026 21:00:00 GMT Too short to count as a break — that's what we assumed. One minute staring out the window, three minutes walking to refill a coffee, five minutes pacing the hallway and back. But in the research world… https://kaifuku-mag.com/en/2026-08-26-journaling/ https://kaifuku-mag.com/en/2026-08-26-journaling/ Tue, 25 Aug 2026 21:00:00 GMT At night, under the covers, your head calls a meeting without your permission. Today's slip of the tongue, tomorrow's schedule, the messages you haven't answered. For this late-night mental meeting, p… https://kaifuku-mag.com/en/2026-08-26-caffeine-half-life/ https://kaifuku-mag.com/en/2026-08-26-caffeine-half-life/ Tue, 25 Aug 2026 21:00:00 GMT A cup before the late-afternoon meeting, another before the evening work session. You are fully aware you run your day on coffee, and yet you file the trouble falling asleep at night as a separate mat… https://kaifuku-mag.com/en/2026-08-25-zone2-nyumon/ https://kaifuku-mag.com/en/2026-08-25-zone2-nyumon/ Mon, 24 Aug 2026 21:00:00 GMT While events like HYROX, which we wrote about yesterday, keep drawing crowds, the world's endurance-training circles are buzzing about a word that points the other way. "Zone 2" — running at a slow pa… https://kaifuku-mag.com/en/2026-08-25-sauna-suimin/ https://kaifuku-mag.com/en/2026-08-25-sauna-suimin/ Mon, 24 Aug 2026 21:00:00 GMT On the night of a sauna day, you fall asleep so fast you barely remember getting into bed. Every sauna lover knows that feeling — and we now live in a time when it comes with a proper explanation. The… https://kaifuku-mag.com/en/2026-08-25-protein-kaifuku/ https://kaifuku-mag.com/en/2026-08-25-protein-kaifuku/ Mon, 24 Aug 2026 21:00:00 GMT Plenty of people talk training with real passion, then get suddenly sloppy the moment the conversation turns to the meal that follows. Even though, from the instant the barbell goes down, the body's a… https://kaifuku-mag.com/en/2026-08-25-power-nap/ https://kaifuku-mag.com/en/2026-08-25-power-nap/ Mon, 24 Aug 2026 21:00:00 GMT Ten thousand meters up, over the Pacific. NASA researchers measured what actually happens when long-haul pilots are allowed to nap during cruise. As settings for a study of napping go, none could be m… https://kaifuku-mag.com/en/2026-08-25-pinkoro-jizo/ https://kaifuku-mag.com/en/2026-08-25-pinkoro-jizo/ Mon, 24 Aug 2026 21:00:00 GMT On the temple approach to Naritasan Yakushiji in Saku City, Nagano, stands a small stone Jizo with a broad smile. Its name is the Pinkoro Jizo — a Jizo statue (a Buddhist guardian figure) that carries…