...You definitely need a way to relax. We had a long lab at uni which is for some programming coursework and it is pretty tricky. I had a demonstrator trying to help me for almost an hour before he gave up and told me to look at how my friend had solved the problem.
Afterwards, we were all pretty tired so 4 of us went down to the pub for a drink and a few games of pool. I didn't play though as I think I'd be pretty rusty.
The Boy and I are playing badminton tomorrow morning after my lecture which will be good fun - although I think he'll be able to beat me easily as I'm out of practice.