If you slowly increase your workout volume over time, your body adapts and you're less likely to get overly tired or burned out compared to jumping into intense workouts all at once.
Evidence from Studies
Supporting (1)
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MR measurements of muscle damage and adaptation after eccentric exercise
The study found that muscles damaged by a hard workout recover and become more resistant to future damage, so the next workout causes less soreness and injury. This supports the idea that building up exercise slowly helps prevent overtraining.
Contradicting (1)
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The study looked at what happens when gymnasts suddenly train more, and found they got weaker and landed harder, which could increase injury risk. It didn’t test slowly increasing training, so it can’t prove that gradual increases help prevent these problems.
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.