Sometime when you get cooked up working on the same project for a long period of time it could weaken your creativity glance. You day could get even worse if you forget to look up at the sky every ones in a while
telling your self to get up and walk around out side for some fresh air sometime.
your body alway appreciate some exercise after lunch and your mind as well.
you just got to finish your meal fast and sketch faster...
here is some sketch I did with pen and ink in just about 20 mins during my lunch hour and result is strangely satisfying!