This is one of the questions that I had to ask myself when I started in college. I was worried that with all my classes, I would or should I say, should be studing in my free time. I knew that I was paying for this education myself and it had better get me a great job so I can pay for it. I found that it is a great part of college life. Getting involved in other aspects of Berkeley rather then just the academics is what makes it a great experience. There is always enough time in the day to get your studing done. Find a club that interests you and go for it. You won't be disappointed. You will meet a bunch of different people than are in your regular classes too. It is a great way to round out your Berkeley experience.