Fitness · October 22, 2026 · 11 min read
Japanese walking: what 3 minutes fast, 3 minutes slow really does for you
The science behind the trend, the actual results of the Shinshu University studies, calories burned by body weight, how to find the right pace without a watch, and a 4-week plan to get started.
Japanese walking: the complete guide
Published on October 22, 2026 · By the Ember team
In short
Japanese walking (interval walking training) alternates 3 minutes of fast walking, at about 70% of your capacity, with 3 minutes of slow walking, 5 times in a row: 30 minutes, at least 4 days a week.
Developed at Shinshu University by Hiroshi Nose and Shizue Masuki, it improved aerobic fitness (+9 to 14%), thigh strength (+13 to 17%) and blood pressure in people around 65 years old over 5 months.
It burns barely more calories than ordinary walking (about 145 kcal per session at 70 kg, or 154 lb): without changes to what you eat, weight loss stays modest.
To check you are at 70%, listen to your breathing: during the fast phase you can say a few words, but you can no longer hold a conversation.
What is Japanese walking and where does it come from?
On TikTok it is sold as the latest weight-loss hack: walk for 30 minutes and change pace every 3 minutes. Behind the "Japanese walking" hashtag, though, sits a serious method that has been tested since the mid-2000s on hundreds of middle-aged and older Japanese adults. Its scientific name is interval walking training (IWT), "interval sokuho" in Japan, and it has nothing to do with a traditional walking style: it is interval training, like HIIT, but within reach of almost anyone.
The idea fits in one line. You walk fast for 3 minutes, at a pace that feels "somewhat hard", then slowly for 3 minutes to recover. You repeat this cycle at least 5 times, which makes 30 minutes, on at least 4 days a week. No equipment, no gym membership: a pavement, a park or a country lane is all you need.
The method was designed by two physiologists at Shinshu University in Matsumoto, Nagano Prefecture: Hiroshi Nose and Shizue Masuki. Their starting point was a simple observation. Easy walking, even every day, does little for fitness after 60, while hard training is difficult to keep up alone and over time. By alternating short, demanding bouts with recovery phases, they looked for a middle ground people could practise near home, without a gym or a coach. The first major trial was published in 2007 in the journal Mayo Clinic Proceedings, and each of the follow-up studies included more than 600 participants.
What the Shinshu University studies actually found
The founding study followed 246 people with an average age of 63 for 5 months in 2004. They were randomly split into three groups: no training, moderate continuous walking (at least 8,000 steps a day, 4 days a week) and interval walking. In the interval group, a small accelerometer worn on the waist checked the intensity of every fast phase.
The results were strikingly clear. The interval group gained 13% in knee extension strength and 17% in knee flexion strength, plus 8 to 9% in peak aerobic capacity, significantly more than the group walking 8,000 steps at a steady pace. Their systolic blood pressure also fell further, by about 10 mmHg according to the review the team published later.
| Measure | Result | Study |
|---|---|---|
| Peak aerobic capacity, measured while walking | +9% in 5 months | Nemoto 2007, 246 participants, average age 63 |
| Knee extension strength (front of the thigh) | +13% in 5 months | Nemoto 2007 |
| Knee flexion strength (back of the thigh) | +17% in 5 months | Nemoto 2007 |
| Systolic blood pressure | about −10 mmHg | Nemoto 2007, as reported in Nose 2009 |
| Peak aerobic capacity, estimated | +14% in 5 months | Masuki 2019, 679 participants, average age 65 |
| Lifestyle-related disease score (blood pressure, glucose, weight…) | −17% in 5 months | Masuki 2019 |
Aerobic capacity rose by 9% measured while walking and by 8% on a bike. The moderate continuous walking group (8,000 steps a day) gained much less.
Later work confirmed the trend in larger groups. In 2011, 666 participants aged around 65 increased their aerobic capacity by about 15% in 4 months, with drops in body weight, body fat, blood pressure and blood glucose; those who started least fit improved the most. In 2019, an analysis of 679 participants showed that the benefit depends mainly on time spent walking fast: gains rise up to about 50 minutes of fast walking a week, then level off, while time spent walking slowly had no measurable effect. In other words, the fast phases do the work.
Does Japanese walking help you lose weight?
This is the most widespread promise on social media, and the weakest. The Japanese studies did report a small drop in body weight and body fat, but they were never designed as weight-loss programmes: participants were over 60 on average, had a BMI of around 24, and the outcome being measured was fitness.
The maths explains why the effect on the scales is modest. For a person weighing 70 kg (154 lb), a 30-minute session burns about 110 kcal more than resting. At 4 sessions a week, that comes to roughly 440 kcal a week, or barely 250 g (about half a pound) of fat a month at best, assuming your diet stays the same and your appetite does not go up.
A frequently quoted Danish study measured a loss of 4.3 kg (9.5 lb) in 4 months in people with type 2 diabetes, but with five one-hour sessions a week, 2.5 times the volume of the Japanese protocol, and only 12 participants in that group. If your goal is weight loss, Japanese walking is an excellent add-on, not the main driver: a calorie deficit on your plate does most of the work. It will not melt belly fat specifically either, and it does not replace upper-body strength training.
How many calories does Japanese walking burn? Table by body weight
How much a session burns depends on your weight and your speed. To estimate it, we used the MET values of the 2024 Compendium of Physical Activities, the scientific reference on the subject: 5.5 METs for the fast phase (4.0 to 4.4 mph, or 6.4 to 7.1 km/h) and 2.8 METs for the slow phase (2.0 to 2.4 mph, or 3.2 to 3.9 km/h), so 4.15 METs on average over the session. We compare it with 30 minutes of ordinary walking (3.8 METs), continuous brisk walking (4.8 METs) and uphill walking (7.0 METs).
| Body weight | Japanese walking (5 cycles) | Ordinary walking | Continuous brisk walking | Uphill walking (6 to 10% grade) |
|---|---|---|---|---|
| 60 kg (132 lb) | ≈ 125 kcal | ≈ 115 kcal | ≈ 145 kcal | ≈ 210 kcal |
| 70 kg (154 lb) | ≈ 145 kcal | ≈ 135 kcal | ≈ 170 kcal | ≈ 245 kcal |
| 80 kg (176 lb) | ≈ 165 kcal | ≈ 150 kcal | ≈ 190 kcal | ≈ 280 kcal |
| 90 kg (198 lb) | ≈ 185 kcal | ≈ 170 kcal | ≈ 215 kcal | ≈ 315 kcal |
| 100 kg (220 lb) | ≈ 210 kcal | ≈ 190 kcal | ≈ 240 kcal | ≈ 350 kcal |
Total energy burned over 30 minutes, including resting needs, calculated as kcal ≈ MET × weight (kg) × time (h) and rounded to 5 kcal. Compendium values for adults aged 19 to 59. The speeds used for Japanese walking are Ember's assumption: your actual burn may differ noticeably.
Here is the surprise: for the same time, Japanese walking burns only about 10% more than ordinary walking, and slightly less than brisk walking held for 30 minutes without a break. Its value is therefore physiological rather than caloric: the fast phases push your heart and thighs beyond their comfort zone often enough for them to adapt. If burning calories is your priority, a slope is still more effective, as our guide to incline walking calories shows.
How do you know you are at 70% without a watch or heart rate monitor?
In the studies, "70% of peak aerobic capacity" was measured in a lab and then checked with an accelerometer. At home you do not need any of that: your breathing is a reliable guide, and the researchers themselves describe the fast pace as walking that feels "somewhat hard". Here are the cues to use.
- Fast phase: the talk test
You can say a few words, but you can no longer hold a flowing conversation or sing. On an effort scale from 0 (sitting) to 10 (all-out), aim for 6 to 7. Your arms bend naturally, your stride lengthens and your breathing picks up clearly by the second minute.
- Slow phase: active recovery
You walk at a strolling pace, around 3 out of 10, and can talk in full sentences again. Do not stop: recovering while moving is what lets you set off quickly on the next cycle.
- The steps-per-minute cue
If your phone or watch shows cadence, about 100 steps per minute already counts as moderate intensity for adults. Your fast phase should sit well above that.
The right level is personal. For an inactive 70-year-old, a fairly modest brisk walk may already reach 70% of their capacity, while a sporty adult will need to walk much faster to feel the same effort. That is the advantage of going by feel rather than a fixed speed. If you are gasping or cannot say three words, slow down: the method aims for a sustained effort, not a sprint.
A 4-week Japanese walking plan for beginners
The studies started straight away with 5 cycles, 4 days a week. If you do not walk much, building up gradually limits muscle soreness and shin pain and, above all, makes you more likely to stick with it. Here is a simple progression to adjust to how you feel.
| Week | Sessions | Each session | Effort during the fast phase |
|---|---|---|---|
| Week 1 | 3 | 3 cycles (18 min) | 5 to 6 out of 10: you can still talk in sentences |
| Week 2 | 4 | 4 cycles (24 min) | 6 out of 10: short sentences |
| Week 3 | 4 | 5 cycles (30 min) | 6 to 7 out of 10: a few words at a time |
| Week 4 | 4 to 5 | 5 cycles, 1 or 2 of them slightly uphill | 7 out of 10: somewhat hard, never out of breath |
Beginner progression suggested by Ember, with 3 to 5 minutes of easy walking before and after. The study protocol starts directly at 5 cycles, 4 days a week.
If 30 minutes in one go feels impossible, the 15 minutes of fast walking can be spread across the day, for example 3 cycles in the morning and 2 in the evening. After the 4 weeks, keep 4 to 5 sessions a week or add a little slope, on a hill or a treadmill, in the spirit of the incline walking method. If you have heart or lung disease, uncontrolled high blood pressure or joint pain, or you are returning to exercise after a long break, talk to your doctor first.
Japanese walking, 10,000 steps or incline walking: which should you choose?
These three trends do not serve the same goal. 10,000 steps is about volume: plenty of movement spread over the day, mostly at a moderate pace. Incline walking is about calories burned per minute. Japanese walking, on the other hand, trains intensity, with effects on endurance and leg strength measured in controlled trials.
| Method | Time | Intensity | Calories (70 kg / 154 lb) | Main strength |
|---|---|---|---|---|
| Japanese walking | 30 min, 4 times a week | Alternating, moderate then hard | ≈ 145 kcal per session | Endurance, thigh strength and blood pressure measured in trials |
| 10,000 steps | ≈ 1 h 40 of walking spread over the day | Mostly moderate | ≈ 410 kcal per day | Higher daily burn, easy to fit in |
| Incline walking (6 to 10% grade) | 30 min | Hard | ≈ 245 kcal per session | Lots of calories without running |
Total energy burned, including resting needs. 10,000 steps: estimate at a moderate pace (3.5 METs), as in our step guides.
In practice, these methods combine very well. One Japanese walking session already adds about 3,000 to 3,500 steps (an estimate that depends on your cadence), and the 2007 trial suggests that, for fitness, 30 well-structured interval minutes beat 8,000 steps at a steady pace. If you count steps to burn calories, our article on 10,000 steps a day explains what that target really adds up to.
5 tips to keep up Japanese walking over time
- Set an interval timer
An interval timer or an alarm that repeats every 3 minutes saves you from watching the clock. Many interval training apps beep at every change of phase.
- Work on your technique
Eyes far ahead, back straight, arms bent at 90 degrees and swinging forwards and back. In the fast phase, lengthen your stride slightly and land on your heel: that is what lets you speed up without breaking into a run.
- Pick the right shoes
A flexible sole and a cushioned heel are enough. Avoid very uneven routes at first: walking fast raises the risk of tripping.
- Walk with someone
The Japanese programme relied on groups and regular follow-up. A friend, neighbour or partner makes sessions more regular, especially in winter.
- Pair walking with food and strength work
For body shape, combine your sessions with a tracked diet and two strength sessions a week: walking alone is not enough.
With Ember, your steps, weight and meals are tracked in one place: snap a photo of your plate or describe it in a sentence, and see whether your walking sessions really come with a helpful calorie balance.
Key takeaways
Japanese walking is not a social media gimmick: it is interval training that Shinshu University has been studying for more than twenty years. Three minutes fast, three minutes slow, five times in a row and four days a week were enough to improve endurance, thigh strength and blood pressure in middle-aged and older adults, better than walking at a steady pace. On the other hand, it burns barely more calories than a stroll and will not make you lose weight on its own. Go by your breathing to find the right pace, build up over four weeks, and pair it with your diet if the scales are your goal.
Sources
- Nemoto K, Gen-no H, Masuki S, Okazaki K, Nose H. Effects of high-intensity interval walking training on physical fitness and blood pressure in middle-aged and older people. Mayo Clinic Proceedings, 2007.
- Nose H, Morikawa M, Yamazaki T et al. Beyond epidemiology: field studies and the physiology laboratory as the whole world. The Journal of Physiology, 2009.
- Morikawa M, Okazaki K, Masuki S et al. Physical fitness and indices of lifestyle-related diseases before and after interval walking training in middle-aged and older males and females. British Journal of Sports Medicine, 2011.
- Masuki S, Morikawa M, Nose H. High-intensity walking time is a key determinant to increase physical fitness and improve health outcomes after interval walking training in middle-aged and older people. Mayo Clinic Proceedings, 2019.
- Karstoft K, Winding K, Knudsen SH et al. The effects of free-living interval-walking training on glycemic control, body composition, and physical fitness in type 2 diabetic patients. Diabetes Care, 2013.
- Herrmann SD et al. 2024 Adult Compendium of Physical Activities: walking (codes 17152, 17190, 17200, 17220, 17035).
- Centers for Disease Control and Prevention (CDC). Measuring physical activity intensity: talk test and perceived exertion.
- Tudor-Locke C et al. How fast is fast enough? Walking cadence (steps/min) as a practical estimate of intensity in adults: a narrative review. British Journal of Sports Medicine, 2018.
For information only; this does not replace advice from a health professional. Calories are estimates calculated with MET values from the 2024 Compendium and assumed speeds; the study results mainly concern middle-aged and older Japanese adults. TikTok is a trademark of its respective owner; Ember is not affiliated with or endorsed by TikTok.
Japanese walking: frequently asked questions
It is an interval walking workout developed at Shinshu University in Japan: 3 minutes of fast walking (about 70% of your capacity, a pace that feels "somewhat hard"), then 3 minutes of slow walking, repeated at least 5 times for a total of 30 minutes, on at least 4 days a week.
A little, but not much. A session burns about 145 kcal in total at 70 kg (154 lb), barely more than ordinary walking. At 4 sessions a week, the theoretical loss is about 250 g (half a pound) a month if your diet stays the same. Its proven benefits are mainly better endurance, leg strength and blood pressure.
For a 30-minute session, about 125 kcal at 60 kg (132 lb), 145 kcal at 70 kg (154 lb), 165 kcal at 80 kg (176 lb) and 210 kcal at 100 kg (220 lb), based on the MET values of the 2024 Compendium of Physical Activities. These are estimates: your actual speed can change the result.
In the studies, gains in endurance and strength were measured after 4 to 5 months of regular practice. The 2019 analysis shows that progress increases up to about 50 minutes of fast walking a week, then levels off: 4 sessions of 5 cycles are therefore enough to get most of the benefit.
Yes. Set a slow speed for recovery and a higher speed for the fast phase, going by the talk test rather than a number. A slight incline can replace some of the speed if walking very fast feels awkward.
For fitness, the 2007 trial favours interval walking: 30 alternating minutes did better than 8,000 steps at a moderate pace. For daily calorie burn, 10,000 steps remain more effective. The best option is to combine both.
It has mainly been tested in healthy middle-aged and older adults (average age 63 to 65), and it is one of the most accessible forms of intense training. If you have heart or lung disease, uncontrolled high blood pressure or joint pain, or you are starting again after a long period of inactivity, ask your doctor before you begin.
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