One hour at the gym won't make up for 15 hours in a chair. The calories you burn just moving through your day, called NEAT (non-exercise activity thermogenesis), vary hugely from person to person.
// 01Why it works
- NEAT predicts fat gain. In a classic Mayo Clinic study, volunteers were overfed by 1,000 kcal a day for 8 weeks. The people who unconsciously moved more gained the least fat, and the change in NEAT was the strongest predictor.
- Steps track with lifespan. A meta-analysis of 15 cohorts found mortality risk fell as daily steps rose, leveling off around 6,000–8,000 steps for adults over 60 and 8,000–10,000 for younger adults.
- It's low cost. Walking adds energy use without much recovery demand, so it doesn't eat into your training.
How to do it this week
- Get your baseline: check your average daily steps on your phone, then aim for +2,000.
- Walk after meals: 10 minutes after lunch and dinner adds up fast.
- Take calls on your feet. Pace during phone and video calls.
- Add friction: park far away, take the stairs, and use a farther restroom.
- Break up sitting: stand up and move every 30–60 minutes.
Bottom line: NEAT often drops when you diet or train hard, because you sit more without noticing. Tracking steps keeps it honest.
Sources
- Levine JA et al. Role of nonexercise activity thermogenesis in resistance to fat gain in humans. Science, 1999. PubMed 9880251
- Paluch AE et al. Daily steps and all-cause mortality: a meta-analysis of 15 international cohorts. Lancet Public Health, 2022. PubMed 35247352
- Bull FC et al. WHO 2020 guidelines on physical activity and sedentary behaviour. Br J Sports Med, 2020. PubMed 33239350