Doctor Kataria gathered a few of his friends together.

卡塔利亚医生召集了几个朋友。

Doctor Kataria believed that people had forgotten how to really laugh.

卡塔利亚医生认为，人们已经忘记了如何真正地笑。

Doctor Kataria claims that laughter is actually a very good form of exercise.

卡塔利亚医生称，笑实际上是一种非常好的锻炼方式。

And then Doctor Kataria had the idea for a group of people who would laugh together.

然后卡塔利亚医生想到了一个主意，让一群人一起笑。