other College activities

So, I spent a few minutes this morning filling out a departmental scholarship form.  There was a spot on the form for College activities, clubs, offices held, honors, awards, etc.  I had nothing to put.  I work 10-12 hours a day, most days of the week.  If I find free time I try to spend it cleaning house, doing laundry, or sleeping, not on any extracurricular activities.  And I know that is also true of all the other grad-students in my lab.  As far as honor and awards go, that was why I was applying for the scholarships.  I have to start building the CV if I want to get any where in this academic life.  

So, I finally stretched a bit and listed a few activities from my undergraduate career just so I didn't leave the section blank, but that was 4 years ago, and even then I spend most of my time working and doing research.  I always assumed my lack of a social life and dedication to my work would be an advantage in the professional/academic world.  Now I have to wonder if I'm wrong.  Are great there professional benefits to extracurricular activities?