The tool we used for this exercise is a brush pen, which I at first did not really like being forced to buy, but in the end I learned to like it. the reason is its diversity, because the key feature of a brush pen is that you can use it for very thick but also for very thin strokes.
So, here we go: For the exercise you need someone to be your model. Maybe if you are learning together with someone, you can model for each other. Then you just start breaking the human figure into shapes, as you can see in the examples below. This helps understanding the basic human figure proportions, before you start going more into details to draw “the real thing”.
This is basically it. If there is interest in more exercises continuing this one, I will of course be pleased to share some more exercises.