THE MOST BASIC OF ALL FITNESS TRAINING PRINCIPLE
A. Principle of overload
The Overload Principle is considered the most important concept in exercise. In simple terms, it means that your body will adapt to the demand you impose on it.
The overload principle refers to a physical training practice in which the body is intentionally pressed to work beyond its current limits. ... The effects of the overload principle are achieved through steadily increasing the work load for the desired exercise or task.
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