What happens to muscles when they atrophy?

When muscles atrophy, they become smaller. This process occurs when there is a decrease in muscle mass due to factors like disuse, illness, or malnutrition. During atrophy, the muscle fibers shrink in size, leading to a reduction in strength and overall muscle volume. This condition is often observed in individuals who are immobilized for extended periods, such as after surgery or injury, or in older adults who may not engage in regular physical activity. The loss of muscle mass can impact mobility and overall physical function, emphasizing the importance of regular exercise and activity to maintain muscle health.