The truth about 10,000 steps a day

Ten thousand steps a day is probably the best-known fitness target in the world. It is printed on fitness trackers, built into phone apps and repeated in offices and schools. Its origin, though, is less scientific than many people assume, and the research that has followed tells a more encouraging story for people who never get close to it.

Where the number came from

In the 1960s, ahead of the 1964 Tokyo Olympics, a Japanese company marketed a pedometer called the manpo-kei, which translates roughly as “10,000-step meter”. The round number was memorable, and it stuck.

There is nothing wrong with a memorable target. Round numbers are easy to remember and to share, which is exactly why they work in marketing. But the number was not originally the result of studies comparing different step counts and health outcomes. That research came later.

What research has found since

Researchers have since studied the link between daily steps and health in large groups of people, often by asking participants to wear step-counting devices and then following them for years. Broadly, they find that people who take more steps tend to have lower risks of early death and of heart disease.

But the benefits do not start at 10,000. Several large studies suggest that much of the benefit appears at lower counts, and that for many people the risk keeps falling as steps rise, before levelling off. Some analyses suggest the point where extra steps stop adding much benefit comes earlier for older adults than for younger ones.

The exact numbers differ between studies and age groups, so treat any single figure with caution. Headlines announcing a new “magic number” usually describe one study, in one group of people, with its own methods.

Does pace matter?

Researchers have also asked whether how you walk matters as well as how far. Brisk walking raises the heart rate more than strolling, and health guidance counts brisk walking as moderate-intensity activity. Some studies suggest a faster stepping rate may bring extra benefit on top of total steps, but this is harder to measure, and the evidence is less settled than for overall activity.

Why correlation is not the whole story

Most step research is observational: it records how much people walk and what happens to their health, rather than randomly assigning people to walk more or less. That matters. People who are already ill may walk less because they are ill, and people who walk a lot may also differ in diet, income, work or sleep. Researchers adjust for these factors where they can, but cannot rule them all out.

That does not make the findings worthless. The link between physical activity and health is supported by many kinds of evidence, including trials. It does mean that precise claims, such as an exact number of steps that adds a certain number of years, deserve scepticism.

How accurate is your step count?

Phones and wearables estimate steps from movement sensors. They are usually good enough to show trends, but they can miss steps, for example when pushing a pram or trolley, or count movements that are not steps. A phone left on a desk records nothing. Different devices can give different totals for the same day. Comparing your own numbers week to week is more meaningful than comparing them with a friend’s.

What this means for you

• Moving more from a low base matters most. Going from very little walking to a moderate amount appears to bring the biggest gains.
• The goal can be personal. A target you can keep is better than one you abandon.
• Steps are not everything. Health guidance also recommends muscle-strengthening activity and less time sitting.

Practical ways to add steps

1. Take a short walk after meals.
2. Get off public transport a stop early, or park further away.
3. Take walking phone calls where you can.
4. Use stairs for a floor or two.
5. Set a gentle increase, such as a few hundred more steps a day than last week, rather than leaping straight to a big target.

Common misconceptions

• “10,000 is a medical guideline.” It is not; official guidance is set out in minutes of activity rather than steps.
• “If I can’t reach it, there’s no point.” The evidence suggests the opposite: modest increases appear to help.
• “Walking replaces everything else.” Walking is excellent, but strength and balance exercises bring benefits walking alone does not.

The official guidance

The World Health Organization recommends that adults do at least 150 to 300 minutes of moderate aerobic activity a week, or an equivalent amount of vigorous activity. Brisk walking counts. It also recommends muscle-strengthening activities on two or more days a week. If you have a health condition, or are starting after a long break, it is sensible to check with a health professional about what level of activity suits you.