English versions of posts from a Nagoya dad reading the parenting research at 3 a.m.https://nijidad.com/enhttps://nijidad.com/en/blog/air-mat-saved-my-back/https://nijidad.com/en/blog/air-mat-saved-my-back/I kept falling asleep on the floor next to my kid at bedtime, and my thirties-era back kept sending me the bill. A camping air mattress fixed it. Here is what it actually does well, and the two things nobody mentions.Sat, 15 Aug 2026 00:00:00 GMT寝かしつけhttps://nijidad.com/en/blog/ninshinchu-ni-moraeru-mono/https://nijidad.com/en/blog/ninshinchu-ni-moraeru-mono/Search for pregnancy freebies in Japan and you get samples worth a few hundred yen. The 100,000 yen is at city hall. 33 items, in the order I'd claim them.Fri, 14 Aug 2026 00:00:00 GMT妊娠手続きhttps://nijidad.com/en/blog/squat-drive-sitting-devices/https://nijidad.com/en/blog/squat-drive-sitting-devices/I couldn't find a controlled trial behind the birth ball or the sleepy drive — untested, not disproven. Once asleep, move her onto a firm, flat surface.Sun, 02 Aug 2026 13:00:00 GMT0歳寝かしつけhttps://nijidad.com/en/blog/swaddle-whitenoise-lullaby/https://nijidad.com/en/blog/swaddle-whitenoise-lullaby/Three bedtime tools with real evidence behind them, each with a condition: on the back only, stop the moment she rolls, keep the sound away from the head.Sun, 02 Aug 2026 12:30:00 GMT0歳寝かしつけhttps://nijidad.com/en/blog/sleep-four-outcomes/https://nijidad.com/en/blog/sleep-four-outcomes/Calm, fall asleep, stay asleep, sleep safely: four goals, one trick rarely does two. Arms, carriers and car seats calm a baby without being safe to sleep in.Sun, 02 Aug 2026 12:00:00 GMT0歳寝かしつけhttps://nijidad.com/en/blog/sids-tasu-yori-hiku/https://nijidad.com/en/blog/sids-tasu-yori-hiku/The protective numbers stop at roughly half. The hazard numbers run to 2x, 5x, 11x. So I stopped shopping for safety and took away the towel under her head.Sun, 02 Aug 2026 02:40:00 GMT0歳寝かしつけhttps://nijidad.com/en/blog/sango-tetsuzuki-kigen/https://nijidad.com/en/blog/sango-tetsuzuki-kigen/Birth registration is 14 days, child allowance is 15 — the two weeks parents are least able to function. Everything else is a guideline, not a deadline.Sun, 02 Aug 2026 00:00:00 GMT0歳手続きhttps://nijidad.com/en/blog/nihongo-de-itte/https://nijidad.com/en/blog/nihongo-de-itte/My three-year-old tells me to say it in Japanese. The arithmetic says 47 years to catch up to my grade-school English. So I moved the target to understanding.Sat, 01 Aug 2026 14:58:15 GMT3歳英語https://nijidad.com/en/blog/meijo-kodomo-hiroba/https://nijidad.com/en/blog/meijo-kodomo-hiroba/Eight photos: the fenced 0–2 area on the north side of Ofuke Pond, stroller parking just outside it, and "CAUTION: HOT" printed on a slide. All of it free.Sat, 01 Aug 2026 13:40:00 GMT0歳3歳https://nijidad.com/en/blog/komaki-miraikan-yoyaku/https://nijidad.com/en/blog/komaki-miraikan-yoyaku/You can go from outside Komaki, but holidays are booking-only at 400 yen a head. The smartphone-only lottery opens 31 days out. All worked out before we go.Fri, 31 Jul 2026 05:21:03 GMT0歳https://nijidad.com/en/blog/meijo-koen-odekake-spots/https://nijidad.com/en/blog/meijo-koen-odekake-spots/With a three-year-old and a baby in tow: a free sewer museum five minutes from the station, a zoo that's free for kids, and a hangar of planes in Toyoyama.Thu, 30 Jul 2026 14:23:59 GMThttps://nijidad.com/en/blog/transport-response/https://nijidad.com/en/blog/transport-response/Walk and the crying stops; sit down and it starts again. It is called the transport response: walk 5 minutes, sit 5–8 more, then put them down.Thu, 30 Jul 2026 13:17:06 GMT0歳https://nijidad.com/en/blog/safe-sleep-asia/https://nijidad.com/en/blog/safe-sleep-asia/The guidelines never say "stop co-sleeping" — they say same room, separate sleep surface. Four things to take home, and why knowing them was not enough.Thu, 30 Jul 2026 05:54:43 GMT0歳寝かしつけhttps://nijidad.com/en/blog/hoshitsu-to-allergy/https://nijidad.com/en/blog/hoshitsu-to-allergy/A Cochrane review found it hard to say moisturizer alone prevents eczema in healthy babies. That is not a reason to stop caring for skin that already needs it.Thu, 30 Jul 2026 05:54:10 GMT0歳アレルギーhttps://nijidad.com/en/blog/vaccine-schedule-today/https://nijidad.com/en/blog/vaccine-schedule-today/The schedule chart in the secondhand parenting book was already out of date. Rotavirus and the 5-in-1 start at 2 months — check today's official pages.Thu, 30 Jul 2026 05:53:45 GMT0歳予防接種https://nijidad.com/en/blog/hachimitsu-to-70do/https://nijidad.com/en/blog/hachimitsu-to-70do/Only two real absolutes for feeding a baby under one: no honey before age one, and formula mixed at 70°C or hotter. Read weight as a line, not a point.Thu, 30 Jul 2026 05:52:37 GMT0歳離乳食https://nijidad.com/en/blog/hanashikake-no-imi/https://nijidad.com/en/blog/hanashikake-no-imi/102 trials across 33 countries say talking to your baby works — and the biggest change showed up on the parents' side. You respond to the signals they send.Thu, 30 Jul 2026 05:52:11 GMT0歳発達https://nijidad.com/en/blog/ikuji-joho-jun/https://nijidad.com/en/blog/ikuji-joho-jun/An hour of searching at 3 a.m. left me nothing but anxiety. The problem wasn't the amount of information — it was the order. Five sources, five jobs.Thu, 30 Jul 2026 05:50:33 GMT0歳https://nijidad.com/en/blog/protein-iron-nabe/https://nijidad.com/en/blog/protein-iron-nabe/You cannot out-willpower sleep-deprived hunger. A palm-sized serving of protein at every meal, iron for my breastfeeding wife, and exactly one pot to wash.Thu, 30 Jul 2026 03:51:53 GMT0歳https://nijidad.com/en/blog/sleep-and-weight/https://nijidad.com/en/blog/sleep-and-weight/Sleeping 1.2 hours more a day cut calorie intake by 270 kcal. Gaining weight while raising a baby is not weak willpower — it is physiology.Thu, 30 Jul 2026 03:50:05 GMT0歳https://nijidad.com/en/blog/year-one-meals/https://nijidad.com/en/blog/year-one-meals/Breastfeeding officially adds 350 kcal and 20 g of protein a day to what you need. How much coffee is realistic, and a shortcut list with no shame attached.Thu, 30 Jul 2026 01:07:11 GMT0歳https://nijidad.com/en/blog/meijo-park-solo-papa/https://nijidad.com/en/blog/meijo-park-solo-papa/Saturday morning in Nagoya: one father, two kids, two hours. Where to change a diaper, how far the stroller gets you, and the golden line for how long to stay.Wed, 29 Jul 2026 21:14:29 GMT0歳3歳https://nijidad.com/en/blog/creaky-floor-defeat/https://nijidad.com/en/blog/creaky-floor-defeat/Seventy-two minutes of bedtime, flawless. Three steps from the door, the floorboard spoke. Why our floor only creaks at night, and the post-match analysis.Wed, 29 Jul 2026 21:14:05 GMT3歳https://nijidad.com/en/blog/night-i-didnt-hear-crying/https://nijidad.com/en/blog/night-i-didnt-hear-crying/Right beside me the baby cried, my wife got up, changed, fed and settled everyone — and I slept through every second of it. The night I heard nothing.Wed, 29 Jul 2026 18:08:31 GMThttps://nijidad.com/en/blog/hajimemashita-3am/https://nijidad.com/en/blog/hajimemashita-3am/A dad in Nagoya, standing in a dim kitchen at 3 a.m. shaking a bottle, wondering how many others were awake too. Why this blog exists, and who it is for.Wed, 29 Jul 2026 17:16:35 GMT