10,000 steps a day and the scale won't move: why

You walk 10,000 steps a day, you eat "healthy", and the scale still does not move.

Short answer: You probably do not know exactly how much you eat, and your body takes back part of the energy you burn by walking. In one study, people followed a walking plan that aimed to raise their burn by roughly 1,500 kcal (calories) a week, and the body took a substantial part of it back, so weight barely moved. That was a small study of 16 people, so treat the details with care. On top of that, people often eat more than they think. In coaching I usually see 20 to 50% more than they write down.

What the study found

I read a recent study (Knaan et al., Communications Medicine, 2026). It was small, 16 sedentary adults with overweight. They followed a supervised walking plan designed to burn an extra 20 kcal per kg of body weight a week (roughly 1,500 kcal for a 75 kg person) for 12 weeks. The body took a substantial part of that back, so weight barely moved. Resting energy use dropped, and so did the energy burned during sleep. Walking became more efficient, and their overall daily activity went up less than expected.

What comes first

The order of things is simple. First comes food: your deficit and enough protein. Then strength training, so you keep your muscle while you diet. Steps and cardio are a bonus on top.

Where the extra calories hide

Here is what I deal with in coaching almost every day. What I see most often: the macros are fine, the portions are bigger than people think. Studies that compare food diaries with measured energy use find that people often underreport what they eat, and by how much varies a lot (Burrows 2019). In one small study of people who said they ate under 1,200 kcal a day, it was 47% on average (Lichtman, NEJM 1992). In the same study, people also overestimated their physical activity by about half. In my coaching I usually see 20 to 50%. Oil poured by eye. A piece of chocolate. A glass of wine with dinner. Finishing the kids' plates. It adds up to a decent portion.

Your metabolism does adapt a little, as the study shows, but in people who report eating very little it is usually within the normal range (Lichtman 1992; more in the slow metabolism myth). The bigger gap is usually in how much you really eat.

For your health, move every day and ideally lift weights too. But to lose fat, measure what you eat. The calculator gives you a calorie and protein starting point. Weighing your food for two weeks shows you what a real portion looks like. If tracking food makes you anxious, or you have a history of an eating disorder, skip the weighing and talk to your doctor first.

Frequently asked questions

How does the body take back the calories I burn by walking?

In the study by Knaan et al. (2026), resting energy use dropped, energy use during sleep dropped, walking became more efficient, and daily activity rose less than expected. Together the body took back a substantial part of the extra burn from walking, so weight barely moved. It was a small study (16 adults), so treat the details with care.

What matters more for fat loss, steps or food?

Food comes first: your deficit and enough protein. Then strength training, so you keep your muscle while you diet. Steps and cardio are a bonus on top.

Where do extra calories come from when I eat healthy?

From small things you do not count: oil by eye, a piece of chocolate, a glass of wine with dinner, finishing the kids' plates. People often eat more than they think. In my coaching I usually see 20 to 50% more than they write down, so to lose fat, measure what you eat.

Is walking still worth it if it does not do much for fat loss?

Yes. Move every day for your health, and ideally lift weights too. For fat loss, what you eat and how much you eat decides.

Sources, so you can check:

1) Knaan T, et al. Multilevel metabolic adaptation to exercise training. Commun Med (Lond). 2026;6(1):244. DOI: 10.1038/s43856-026-01502-z | PMID: 41814067

2) Lichtman SW, et al. Discrepancy between self-reported and actual caloric intake and exercise in obese subjects. N Engl J Med. 1992;327(27):1893-1898. DOI: 10.1056/NEJM199212313272701 | PMID: 1454084

3) Burrows TL, et al. Validity of dietary assessment methods when compared to the method of doubly labeled water: a systematic review in adults. Front Endocrinol (Lausanne). 2019;10:850. DOI: 10.3389/fendo.2019.00850 | PMID: 31920966

Martin Barna

Online nutrition and fitness coach. Since 2013 I have coached 600+ people through fat loss. Evidence-based coaching with food you can keep eating.

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This article is for information only. It is not medical advice. If you have a health condition, talk to your doctor.