Sketching roommates

Having a new flat full of roommates and plenty of their friends is quite convenient for practicing sketching. They all quickly get used to being portrayed, and rapidly stop noticing. The drawback is that they keep moving all the time. Some of them are pretty quiet, but most can't sustain a pose for more than 2 nanoseconds :-/
I just have to fare with it. Actually I'm more used to draw people from my imagination rather than from real life, but I know that a good artist absolutely needs both sides, so I hope to make good progress here.

( ft Jess, Julie, Matth, Thomas, Benoît )