What can be a long-term effect of repeated muscle fatigue?

Repeated muscle fatigue can lead to molecular damage to muscle tissue over time. This occurs because intense and prolonged physical activity causes small tears in the muscle fibers and can result in the accumulation of metabolic byproducts, such as lactic acid, which may disrupt cellular function. In the long term, this damage can lead to issues such as inflammation, impaired muscle recovery, and potential changes in the structure and function of the muscle.

While regular exercise often results in improved muscle endurance and increased strength, excessive strain without adequate recovery does not guarantee these benefits. In fact, it may lead to overtraining and the deterioration of muscle health. The idea that there would be a decreased chance of injuries is also misleading, as overtraining and fatigue can increase the likelihood of strains and sprains due to compromised muscle function and coordination.