badminton coach

This afternoon, when I sit under the tree at campus, I saw some children getting an exercise at field. There are three boys with their coach. Somehow, I impressed with the thing that they do. During they doing exercise, I just pay attention to them for almost 30 minutes. The three boys running back and forth around the field, crawling, and jumping over the barier, until they shirt wet. First, I guess that they were football player. But then, I realize that they were badminton player. Wow! It's my first time that I saw how badminton exercising. The coach, however, is teacher too. He is sport teacher. And the three boys are good student, because they listen carefully to the coach direction. And they neither showing expression annoyed nor bored. Wow. Cool. Whereas, they are just a kid. I'm so stunned with them. Suddenly, the coach stop his step, looking at me, and waving his hand to me. I was surprised. What was he doing? I wondered. Then I was laughing, after I asked to myself "did he trying to wake me up from my sighting? or he just wanted to greeting me?" wkwkwkwkwk.... whatever. It was a little bit strange but funny. :D And I'm amused. Hihihihi... :p