When it comes to achieving a fitness goal, whether it’s building strength or increasing endurance, progressive overload is a crucial concept to understand. Put simply, it is the gradual increase in stress placed on the body during exercise, which in turn leads... If you want to accelerate your fitness progress, it’s important to understand the SAID principle. This principle stands for Specific Adaptation to Imposed Demands, and it essentially means that your body will adapt specifically to the demands placed upon it. In... 
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