To Change the Atmosphere

I think sometimes changing teacher is very good for students because we have more chances to practice listening. Every teacher has different voice, accent and some intersting.

For example, I'm learning from a subtitute teacher now. He is a positive teacher. He always chooses intersting stories for students to read. After stories, sometimes we feel tired. He woke us up by Japanese Kung Fu that he had known. We followed him and did it. We felt good and got more motivating after that.

For eating is the same. Sometimes, we change the tasting so we feel good?