Value Village ／ Health
This answer is a draft. It stays unpublished until legal review and source verification are complete.
From "10,000 steps a day" to "20 minutes of brisk walking": Japan's health-promotion targets have shifted towards "intensity", not just step count. The Ministry of Health, Labour and Welfare's 2023 guide asks for "exercise that makes you slightly out of breath" on top of walking. Here, in numbers, is what "walking fast" means and how fast that is.
| Item | Figure or content |
|---|---|
| Speed guide | 100–110 steps a minute, 5–6 km/h, 3.5–4 METs (3.5–4 times the energy used at rest) |
| How it feels | "You can talk but not sing", "slightly out of breath", "a light sweat" |
| National guide (2023) | Adults: physical activity at walking level or above for 60 minutes or more a day (about 8,000 steps) + exercise that makes you out of breath and sweaty for 60 minutes or more a week + strength training 2–3 days a week. Older people: 40 minutes or more a day (about 6,000 steps) + multi-component exercise 3 days a week |
| Nakanojo Study (Nakanojo, Gunma Prefecture; 5,000 people aged 65+; since 2000) | 8,000 steps / 20 minutes moderate intensity: linked with preventing high blood pressure, diabetes, dyslipidaemia and metabolic syndrome. 5,000 steps / 7.5 minutes: linked with preventing the need for care, dementia, heart disease and stroke. Above 12,000 steps / 40 minutes the benefit levels off |
| Large overseas study | Follow-up of 50,000 people in the UK (Stamatakis et al., 2018): brisk walkers had about 20% lower all-cause mortality than average-pace walkers; among over-60s, cardiovascular deaths were roughly halved |
| Stride | About height × 0.45 is the guide for brisk walking (about 72 cm for someone 160 cm tall). Lengthen the stride and you speed up naturally |
[Verify] Check the Nakanojo Study figures (8,000 steps / 20 minutes) against material published by the Tokyo Metropolitan Institute for Geriatrics and Gerontology, and the national guide's figures against the *Physical Activity and Exercise Guide for Health Promotion 2023*. Check Stamatakis et al. (Br J Sports Med 2018) against the original.
Steps alone at low intensity do little for the heart, lungs and blood vessels. Including 20 minutes brisk in 8,000 steps is the evidence-based guide.
"You can talk but not sing" is enough. No need to run; a pace that leaves you badly out of breath cannot be kept up.
The Nakanojo Study found the benefit levels off above 12,000 steps and 40 minutes, while the load on knees and feet rises. There is a right amount.
2 × 10 minutes is generally described as giving the same benefit for the same total time. Build it up in pieces.
For older people too, "6,000 steps a day, including some walking that makes you slightly out of breath" is linked with preventing the need for care. But if you have knee or heart problems, ask a doctor, and increase the pace gradually.
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https://www.mhlw.go.jp/stf/newpage_36593.html
https://www.tmghig.jp/research/
https://doi.org/10.1136/bjsports-2017-098677
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What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.
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