Programming all day

For the last week, I I've been dreaming code.  It happens from time to time, especially when I'm programming too much.  So, I'd like to know how many of you spend the majority of your day programming, and whether this is normal.  I'm in my senior year of CS @ UCSD(one more week!), have a job programming, and am working on a videogame for the XBox Live contest.  As a result, 90% of my days are spend coding, even on the weekends.  Is this healthy?  Do you guys do something similar?

Normally I spend insane amounts of time coding (both for job and leisure). Right now I'm on vacation, so I don't have to code for work, and I made the decision to not code at all during the vacation, instead focusing on mountain biking, reading and playing instruments. The only thing I've written last week was a 100-line Python script out of necessity.