阅读理解
For some people, walking or running outdoors is a great way to exercise. Seeing rubbish（垃圾） all over the ground may not be so great. Well, some people are doing something about it. They are plogging!
“Plogging” began in Sweden. The name combines（组合）the word "plocka" which means to pick up, and word "jogging" which means to run slowly.
A Swedish man named Erik started the sport in 2016. On the World Environment Day website, Erik said that he moved to Stockholm from a small community in northern Sweden. Each day he would ride his bike to work. He became worried about rubbish on his way to work. So he began to picking up the rubbish. And that is how plogging was born! Plogging has already begun in Sweden. But many people who exercise outdoors have been doing this for years.
For example, Jeff is a personal trainer in Washington, D. C. He would pick up rubbish while running outside. He even turned it into a game. He would try to pick up the rubbish without stopping.
He said, "when the street looks bad and dirty, you are going to feel bad about the neighborhood. You may even feel less safe because of that. So if we are all doing our part and picking it up, it's very easy to have beautiful environment. And jogging can be fun, too. You can ask your friends to go plogging and you will enjoy a day of it."
Now plogging is becoming more and more popular. It has become an international sport and there are people all around the world doing this.