What Is Fatigue?

Definition
Fatigue is a temporary reduction in physical or mental performance capacity resulting from accumulated stress. It reflects both peripheral and central mechanisms.

What It Includes
Fatigue can originate from muscular depletion, nervous system strain, metabolic byproducts, psychological stress, or insufficient recovery.

What It Is Not
Fatigue is not weakness, lack of discipline, or permanent decline. It is a normal and expected outcome of productive training.

Why It Matters
Unmanaged fatigue interferes with adaptation and increases injury risk. Properly managed fatigue drives progress.

Practical Implications
Training systems should intentionally introduce fatigue while providing adequate recovery to prevent chronic accumulation.

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