Sports can help us a lot. Taking exercise can make us strong. In collective(集体的) sports like basketball, volleyball and football, we will learn the importance of cooperation(合作). And sports can also help us relax after work or study.
However, as the saying goes, "There are two sides of everything." Sometimes we may hurt other players or ourselves if we are not careful enough when participating(参加) in sport activities. What's more, too much or hard practice can be bad for our health.
Sports can make us healthy both physically and psychologically(心理上地). Sports can also be a good way for people to know each other and can improve the friendship between people. As long as we are careful enough, sports can do us nothing but good.