Thus the “Fitness-Fatigue Model”
When it's properly managed, all the variables come together to form a pattern that (optimally) looks like this:
As your training progresses, your physical capabilities improve.
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Your improvements are seen in your level of
performance at the gym or during your training.
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As training continues, fatigue begins to accumulate.
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At some point this will hinder your performance during training.
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When this happens, a decrease/taper in workload
should occur to allow your body to rest and recover.
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Due to adequate recovery, performance returns to
normal and then increases.
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The cycle repeats.