I like to multitable for this very reason. I don't know how I could ever stop now, to me it is the single most important difference from face to face play.

I also like to take frequent breaks. If I plan on playing four hours, I need a 10 min break each hour or I start to play like an idiot. I mean I'm not gonna drop a HOTT game or anything, but after the seat cools down I break for a bit. I try to get the dishes washed or rugs vacuumed, doing something that is really, truly boring relatively speaking. Then when I get back to the games, all of a sudden, they're not boring anymore. Amazing! It works really well and I can get some chores out of the way while I'm playing, which goes a long way with my girlfriend.