# Progressive overload

Progressive overload is the principle of gradually increasing your training demands, to keep driving adaptation. You can increase the load, the volume, the density, the range of motion, or how close you push to failure. Without it, your body settles into a maintenance state and your gains plateau. The progression has to be small enough to tolerate, but large enough to matter. It is the central mechanism behind sustained gains in strength, muscle size, and bone density, across a whole training career.

## Sources

- Rhea MR, Ball SD, Phillips WT, Burkett LN. (2002). A Comparison of Linear and Daily Undulating Periodized Programs with Equated Volume and Intensity for Strength. Journal of Strength and Conditioning Research. https://doi.org/10.1519/1533-4287(2002)016<0250:acolad>2.0.co;2
- American College of Sports Medicine. (2009). American College of Sports Medicine position stand: progression models in resistance training for healthy adults. Medicine & Science in Sports & Exercise. https://doi.org/10.1249/MSS.0b013e3181915670

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