Muscles grow

Trusylver

Sport and Exercise Coach
Staff member
Sub Kwon Y, Kravitz L. How do muscles grow?. IDEA Fitness Journal. 2006 Feb 1;3(2):21-5.


https://www.ideafit.com/wp-content/uploads/files/_archive/022006_howdomuscl.pdf

however, the simple version is, muscle fibres are broken down during training, and are rebuild thicker and stronger while you rest and recover.
 
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