The point is, that, if you look careful at the battle description, this poor small gray wolf is taking in every round only 1.3 of my health. I started battle with 48 units of health. 48:1.3=48. I had enough health to resist 48 rounds of fight with this wolf. Why it was necessary to waste my spirit in this case? I finished the battle with more health than started, but without spirit left.
This is not right. I am going to hight and not to improve my health in the battle. And, again, spirit costs 2 times more expensive than health. Why should I use 10 units of spirit to get 2 units of health?