I only work when I feel I can be productive, and am currently averaging 6.5 hours per day. As a graduate student I am somewhat disconnected from the whole "show

I only work when I feel I can be productive, and am currently averaging 6.5 hours per day. As a graduate student I am somewhat disconnected from the whole "show up at x, leave at f(x)" concept. I also tend to work on the weekend. Basically if something has to be done, I make time for it. The disadvantage to this approach is that whenever I want to meet people, I have to modify my schedule. There is value in the idea that everyone involved in a project is at the office for a mandated period of time. It may not be best for everyone, but it sure is nice to be able to interact with people without the ordeal of establishing a common meeting time.