IL6 and fibrosis: In this study, we can affirm that the aerobic exercise training was able to impose an pulmonary and systemic anti-inflammatory condition, based on the lower total leukocyte, macrophage, and lymphocyte numbers, as well as the IL-6 levels both in the lung and blood of trained fibrosis mice group (Bleo+Exe) compared to the nontrained mice group with fibrosis (Bleo).