These are some gesture drawings that I did in a class with at the University I attended, some years ago.
Some are longer, but most are 5 seconds - 10 seconds- 20 seconds . on large newsprint.
I found these exercises extremely useful in learning to draw, and even know accessing that state of seeing when I am creating and drawing.
One thing that my professor said while teaching us, during this extensive 6 hour long classes, was to draw these gesture drawings as if the person or object were falling out of the top of a building, and you had mere seconds to capture its essence as it fell towards earth.. It made for a very focused and very hectic, but also great drawing sessions with him. We would use whole pads of large newsprint in one day, our arms so exhausted, I found myself using both hands to draw the figure as fast as possible in the 10-20 seconds allowed. So much fun :D