“3-3-3 walking” usually means Japanese interval walking: three minutes of easy walking, then three minutes of brisk walking, repeated. This plan takes you from your first session to the full 30-minute routine in a month, at a pace that is easy to stick with.

The short answer: walk three days a week for the first fortnight, then four. Start with three easy/brisk cycles (18 minutes) and build to five cycles (30 minutes) by the fourth week. By then you will be doing about 60 minutes of brisk walking a week, which is past the roughly 50 minutes a week at which a large Japanese study found the benefits level off.

Before you start

You need comfortable shoes, a route you can walk without stopping for traffic every minute, and a way to know when three minutes are up. That last one matters more than it sounds: glancing at a watch every few minutes breaks your rhythm, so use a timer that announces the switch, like our free Japanese walking timer.

Learn the two paces before your first session. The easy pace is one where you can talk in full sentences. The brisk pace is one where you can manage only short phrases. The complete guide explains this talk test in more detail.

The 30-day plan

One cycle is 3 minutes easy plus 3 minutes brisk. Add a minute or two of easy walking before and after each session.
DaysCycles per sessionSession lengthSessionsBrisk minutes that week
1–7318 minutes327
8–14424 minutes336
15–21424 minutes448
22–30530 minutes460

Spread the sessions out, for example Monday, Wednesday and Friday in the first two weeks, adding Saturday or Sunday from day 15. A rest day between sessions is useful at the start, because the brisk blocks ask more of your legs than ordinary walking.

Days 1–7: learn the rhythm

Three cycles, three times. The goal this week is not fitness; it is getting the feel of the two paces and the switch between them. Keep the brisk blocks conservative. If you finish a session feeling you could have done another cycle, that is exactly right.

Days 8–14: add a cycle

Four cycles per session. Pay attention to the easy blocks: the common mistake is letting them creep up to a moderate pace, which leaves you too tired to make the next brisk block properly brisk. Easy should feel easy.

Days 15–21: add a day

Keep four cycles but walk four days instead of three. Adding a day rather than more time per session spreads the effort and builds the habit. The original trial asked participants to train on four or more days a week.

Days 22–30: the full routine

Five cycles, 30 minutes, four days a week. This is the routine used in the research. If five cycles is too much on a given day, do four. A slightly shorter session done is worth more than a full one skipped.

Why the plan counts brisk minutes

A study of 679 people with an average age of 65 found that fitness and health markers improved as weekly fast-walking time rose to about 50 minutes, then levelled off. Slow walking time and total walking time did not predict improvement; the brisk minutes did. On average, people in that five-month programme raised their aerobic fitness by 14%. The study had no comparison group, so it shows what changed in people who did interval walking, not what would have happened otherwise.

That is why the table tracks brisk minutes. The plan passes 50 a week in its final stretch, and four sessions of five cycles gives you 60, with some margin for a missed session.

What to expect after 30 days

Expect the brisk blocks to feel more manageable and the routine to feel normal. Don’t expect a transformation. The measured improvements in the Japanese research came after five months of training, not one. The first month is about building something you will still be doing in the fifth.

After day 30

Hold at five cycles, four days a week. There is no need to keep adding time: the research found the benefit levels off at around 50 brisk minutes a week, so more is not automatically better. If the brisk pace starts to feel easy, walk the brisk blocks a little faster or find a gentle slope, rather than adding cycles.

Sticking with it is what counts. In a 22-month follow-up of 696 people doing interval walking, average adherence was 70%, and the groups that kept it up more consistently saw larger improvements in fitness and lifestyle-disease risk.

If you miss a day

Pick up where you left off. Don’t double up the next day to compensate, and don’t restart the plan from day one after a short break. If you have been away for two weeks or more, drop back a week in the table and build up again.

Check with a doctor first if you have a heart condition, blood pressure that isn’t well controlled, diabetes, joint problems that walking aggravates, or if you have been largely inactive for a long time. This page is educational, not medical advice.

Sources

  1. 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;82(7):803–811. doi:10.4065/82.7.803
  2. 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;94(12):2415–2426. doi:10.1016/j.mayocp.2019.04.039
  3. Masuki S, Mori M, Tabara Y, et al. “The factors affecting adherence to a long-term interval walking training program in middle-aged and older people.” Journal of Applied Physiology 2015;118(5):595–603. doi:10.1152/japplphysiol.00819.2014

About the author

Theresa Sebastian is in her seventies and walks the Japanese interval method outdoors three or four days a week. She writes from experience, not medical training. More about Theresa