What do you think you can do only you are a university student?
When an adult tries to answer this question, they have to take into consideration the fact that once you are thrown into the "nine to five routine", you have little leisure time. So they think about what they would like to do had they some leisure, and provide the answer. Consequently, I have heard it said that it is traveling abroad, an intern, or joining a cricle. However, I have a different opinion. What you can do only when you are in university is attending a course of lectures and talking with a professor. When you have graduated from university, it is not too much to say that you will never have any chances for it.