In France, we have a expression that it's good to cure/ recover the pain by the pain/or the bad by the bad. By example, it means that even if my legs are still very pain, it's still good that I do some little exercise to recover (better than if I do nothing: if I don't walk at all, stay in my bed etc.). In English, the expression is "fight fire by fire", or "give tit for tat" but I don't like too much these expressions: Tit and tat, I really don't know what does it mean and I feel that "fire" is not the best appropriate word. Do you have any similar expression in Chinese?