I'm trying to get perspective on what life is life for a physics grad student, namely on the social side of things. When I was an undergrad (UC Irvine), it seemed that the majority of the graduates at my school were dedicated, quiet, and exceedingly introverted. However, my sample size is very small...I only interacted with maybe half a dozen grad students. Most of the grad students seemed to be depressed at some level. I'm just curious if that's the case at most physics grad programs. So I guess I'm asking people to describe their lives as a physics grad student...daily routine, social life, etc. Is there ample socialization within your program? Or do you find yourself reaching outside of the circle to make new friends and socialize?