For a physiological system to improve, it must be exposed to a stimulus greater than it is normally accustomed to, such as a faster pace or a heavier weight; this is referred to as the principle of _____.

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The principle of overload states that a physiological system must be exposed to a load greater than it is accustomed to for improvement or adaptation to occur. This principle is fundamental in exercise science and training, where progressively increasing the intensity, duration, or frequency of exercise stimulates physical improvements.

For a Physiological System to Improve, It Must Be Exposed