Why you can’t build muscles in a calorie deficit despite weight training

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After getting into weight training, something is confusing me. They say that you cannot gain muscles by weight training if you are in a caloric deficit. But if someone is actively working on their muscles through weight training, why is this?

Would this rule carry over to someone who had a high % of body fat or does this only apply to people with low body fat %? If someone had a high body fat %, will they still not gain any muscles if they are weight training but in a calorie deficit?

I genuinely don’t understand! TIA!

In: Biology

18 Answers

Anonymous 0 Comments

You can, and it’s called body recomposition. It’s incredibly hard to study scientifically, but lots of studies have tried and come to the conclusion that you can lose fat while building muscle. It’s also said to be easier for those who are new to fitness or those who have a large amount of excess fat, but one study I linked claims it is doable for even those who are relatively fit.

[https://journals.lww.com/nsca-scj/fulltext/2020/10000/body_recomposition__can_trained_individuals_build.3.aspx](https://journals.lww.com/nsca-scj/fulltext/2020/10000/body_recomposition__can_trained_individuals_build.3.aspx)

[https://www.sciencedaily.com/releases/2016/01/160127132741.htm](https://www.sciencedaily.com/releases/2016/01/160127132741.htm)

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