Research has revealed that specific immune cells can bind very quickly to muscle fibres and promote their healing. These cells send pulses of calcium that trigger muscle tissue repair in seconds. The mechanism has been validated in models of both muscle injury and disease. Administration of regulatory T-cells directly into injured muscles significantly accelerates their regeneration, increasing the amount of muscle tissue and the size of muscle fibers. The research was conducted in animal models where T-cells were injected in hydrogels into the damaged areas. The discovery suggests the potential for new therapeutic methods aimed at regenerating and treating degenerative muscle diseases. This approach may lead to more efficient and faster muscle recovery after injury or disease[1].