Unless you designate it as “most meaningful”, you will have a very short space to describe the activity. So if you want to write something extra regarding impact, you have to make sure it is of substance.
Here are some of my tips for writing those extra nuggets:
-When writing about shadowing, be sure to briefly write about your knowledge about what a doctor’s day is like
-Write an interesting detail about an activity that someone wouldn’t otherwise expect. For example, I volunteered at a shelter and briefly wrote a sentence about how I frequently helped men with criminal backgrounds with their resumé.