As an arch student you will soon find out that studio is your social life for the most part. How much of your social life is going to be up to you. If you envision leaving class and going to do many of your chosen extracurricular activities during the week, studying at night, etc., like students in most other majors do, you will find it impossible to keep up or turn in quality work.
Personal example. Four years ago, my s and his one of his best friends enrolled as arch majors. Both started out freshman year involved in a club sport and joined a campus faith organization. Year two, the club sport was dropped. By year three my s reported going to maybe one meeting every couple of weeks with the campus ministry group if he was lucky. He said he felt "guilty" if he wasn't in studio working on his projects. Now his friend on the other hand continued to be much more involved with that club and tried to manage giving sufficient time to both. Each felt comfortable with their path. It is all about balance, but you really need to think about how committed you are going to be to the field of architecture and to your design work.
You will sacrifice a lot of time for your work and will not be able to be as involved in as many other extra-curricular activities as other students. If you know this going in and are OK with it, the arch major can be a very wonderful experience. Best of luck to you!