C15 "He cared for me today!"

With each blow Zack threw, he appeared more and more intent and furious. He seemed really enraged, and he viciously desired to take out his frustrations on his punching bag.

"What’s wrong?" asked the man who was coaching me when he noticed I stopped punching.

I immediately went back to my senses and shook my head. "Ah, nothing."

"Come on. Punch more." he encouraged me to give another