Ha ha. That really depends on your Uni. I remember severe health problems due to the amount of study in my undergraduate.
School CAN be a really free time. You live in a tiny room, Have access to a cafeteria, have a 0-5min commute to work, and are surrounded by an army of peers who are segmented by interest (field of study). As evidenced by the number of startups that started in college dorm rooms, it's a great place to start a company.