eli5 Why/how do muscles shrink?

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You get sore muscles when you train, because you muscle strings rip and when they heal, your muscles grow. As far as I know. So why and how do they shrink?

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Anonymous 0 Comments

Our body is constantly assessing what is needed and what’s not. The things you don’t use on the regular are deemed as not relevant and thus reduced.

The classic “use it or lose it”. It’s a matter of energy preservation. Especially muscles burn a lot of energy, even if not in use.

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