muscle function and adaptation

Muscle function involves contracting to produce movement or force, powered by tiny blood vessels delivering energy and nutrients. When muscles are used regularly, they adapt by increasing in size, strength, and efficiency, a process called hypertrophy. This allows muscles to perform better and resist fatigue. Conversely, lack of use leads to muscle weakening and atrophy. Overall, muscles respond to physical activity by strengthening and becoming more capable, ensuring the body can handle different demands effectively.