Overweight adults who engage in regular aerobic exercise use less oxygen when walking at a moderate pace, which reduces the amount of energy their body needs for everyday movement.

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Evidence from Studies

Supporting (1)

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Multilevel metabolic adaptation to exercise training

Randomized Controlled Trial

Human & Animal

2026 Mar 11

When overweight people exercise by walking regularly, their bodies get better at walking, so they use less energy to do it — like becoming a more efficient car. This helps explain why they don’t always lose as much weight as expected.

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Source Study

Multilevel metabolic adaptation to exercise training

Score: 44

DOI: 10.1038/s43856-026-01502-z

Similar Assertions

When overweight adults walk for 12 weeks at a targeted energy expenditure level, their bodies burn fewer calories at rest and during sleep, reducing total energy expenditure by about 100 calories per day, which offsets some of the calories burned through exercise.

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72%

In overweight adults, doing aerobic exercise does not increase total daily calorie burn beyond what the exercise itself burns. Instead, the body adjusts by lowering the amount of energy used at rest, not by reducing everyday movement.

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71%