The Short Version
The 10,000-step target started as a 1960s Japanese pedometer marketing campaign.
In older women, about 4,400 steps a day was linked to 41% lower mortality than about 2,700, with benefits leveling off near 7,500.
Benefit plateaus around 6,000 to 8,000 steps for adults 60 and over, and 8,000 to 10,000 for younger adults.
Every extra 1,000 steps was associated with meaningfully lower mortality risk, so more is better until the curve flattens.
Walking doesn’t replace strength training, which protects muscle, bone, and metabolic health.
If you've ever felt like a failure at 8:30 p.m. because your watch says 7,400 steps, this one is for you.
The idea that you need 10,000 steps a day is a durable notion in fitness, and it has shaped how millions of adults over 40 judge their health. We even preach it in certain instances in the Studio, but the question of WHY becomes very important. Are we talking general health, leg muscle strength, metabolism, what?
Let’s dig into where the 10,000 steps number comes from, what research has been done, and then move into WHY Strength Studio prescribes it for certain trainees and not others.
Where 10,000 Steps Came From
The figure of 10,000 steps - and it shouldn’t surprise you if you’ve been reading this blog for long - didn't come from a clinical trial.
According to Harvard researcher I-Min Lee, it appears to have originated in 1965 in Japan from a company that made pedometers, and the number wasn't based on scientific evidence. The device was called the manpo-kei, which translates to "10,000 steps meter." It was a catchy name, and it stuck for sixty years.
That said, does that mean it’s BAD to get 10,000 steps in every day? No, not really, but it shines a light on a phenomenon that’s very prevalent in the fitness world. Like with an 8 hour fasting window (which originated based on the researcher’s personal life and time constraints, not because 8 hours is optimal), the targets being prescribed by your fitness instructor may not be as written in stone as you think in order to achieve results.
What the Research Shows
The best-known test of the number came from Lee's Harvard team.
In a study of more than 16,000 women with an average age of 72, 4,400 steps a day was associated with a 41% lower risk of death than 2,700 steps, and the benefit leveled off at roughly 7,500 steps. Step intensity didn't matter once total steps were counted.
Larger pooled analyses point the same direction.
A meta-analysis of 15 international cohorts covering 47,471 adults found that risk fell steadily until roughly 6,000 to 8,000 steps a day for adults 60 and older, and about 8,000 to 10,000 for younger adults.
Compared with the least active quarter of participants, the most active quarter had roughly half the risk of dying during follow-up. That means if you move more, generally speaking, you’re healthier than someone who moves less. (Groundbreaking!)
A 2023 meta-analysis of 17 studies and 226,889 people found that as few as 3,967 steps was linked to lower all-cause mortality, and each additional 1,000 steps was associated with a 15% lower risk. Among adults 60 and over, the biggest reduction appeared at 6,000 to 10,000 steps a day.
The takeaway? Move more, but understand that the 10,000 number isn’t magical.
What This Means If You're Over 40
First, the good news. If you're far below 10,000 steps, the first few thousand extra are where most of the payoff is. Lee has noted that the average American takes only about 4,000 to 5,000 steps a day, so moving from there to 6,000 or 7,000 is a realistic, meaningful jump.
Second, a sensible target depends on your age. Based on the pooled data, adults 60 and over see most of the benefit around 6,000 to 8,000 steps, while younger adults may benefit from 8,000 to 10,000. More recent work covered by Popular Science described nearly 50% lower risk at about 7,000 steps a day, with the curve leveling out beyond that for mortality.
Third, remember what these studies can and can't tell us. They're observational. People who walk more may simply be healthier to begin with, (What came first, the chicken or the egg?) so the numbers show an association rather than proof that steps cause longer life. Still, we suggest acting on that assumption.
Steps Are Necessary, Not Sufficient
Walking is wonderful for your heart and mood, but it doesn't challenge muscle and bone the way resistance training does.
After 40, we lose muscle gradually, and low-intensity walking alone does little to stop that. Longevity depends on staying strong enough to climb stairs, carry groceries, and catch yourself in a fall.
At Strength Studio Kauai, ARX adaptive resistance training lets you work a muscle to fatigue in a short, safe, joint-friendly session, which is a very efficient way to build and protect strength. Pair that with daily walking on the island's beautiful trails and beaches, and you've covered both sides of the longevity equation.
The Bottom Line
Ten thousand steps is a fine goal, but it isn't the end all be all of fitness. If your watch says 6,500 and you've been strength training, you're doing way better than someone who did 12,000 but skipped the weights. Aim for a realistic step count for your age, build from wherever you are, and make sure strength training is on your calendar, too.
Curious how to build a routine that covers both? Book a session and let's make a plan that fits your life.