One of the key mechanisms behind progressive overload is muscle hypertrophy, the process through which muscle fibers increase in size in response to training stimuli. When you challenge your muscles beyond their accustomed levels, microscopic damage occurs in the fibers, triggering a repair and growth process. This adaptation leads to bigger and stronger muscles over time.
Consistency is key when applying progressive overload. It's essential to progressively increase the training stimulus in a structured manner while allowing adequate rest and recovery for optimal adaptation. Overloading the muscles too rapidly without sufficient recovery can lead to overtraining and potential injuries, hindering your progress.