No, you need hobbies to show Adcoms that you are a human being.I'm sure this question has been asked a lot, but do I need to have a specific type of hobby to be "impressive" for adcoms? I have to admit I don't really have any impressive hobbies; I box, I ride motorcycles, I play video games, lift weights, fish a lot... Maybe that is all impressive since I am a woman and "breaking gender stereotypes" but I don't think any of those really say anything like "I play violin for my university." With that being said, does it matter what hobbies students have or do adcoms just want to see you have a method of stress relief?
Edit: I do study various languages as well, for fun. Spanish for over 8 years, Latin for 5 and now trying to pick up French for 2. I hate that I'm trying to cater my hobbies to looking competitive but this is the information I've been told.