What does the 10% rule relate to?

The 10% rule is fundamentally associated with the Principle of Progression within the context of fitness training. It suggests that when an individual aims to increase their physical capabilities, such as weight lifting, running distances, or overall workout intensity, the increase should be made gradually, specifically by no more than 10% from one training session to the next. This approach helps to minimize the risk of injury while allowing the body sufficient time to adapt to the increased demands.

By adhering to this rule, individuals can ensure that they are challenging themselves appropriately without overwhelming their bodies, which can lead to overtraining or injury. This incremental improvement is crucial for sustained progress in fitness routines, as it emphasizes safety and effectiveness in enhancing physical performance over time.

In contrast, altering diet or reducing workout intensity and frequency by a specific percentage does not relate to this principle of gradual overload or progression, which is the essence of the 10% rule. The focus remains on the safe and manageable progression of physical activity levels, making option A the correct interpretation of the 10% rule in this context.