Croquis drawing is quick and sketchy drawing of a live model. Croquis drawings are usually made in a few minutes, after which the model changes pose and another croquis is drawn.
The short duration of the pose benefits the model because they don't need to keep their poses for a long period. This also benefits the artists because it helps them concentrate on the essential elements of the pose. With this type of drawing and posing, an artist simply does not have time to draw all the details, so they learn to ignore them and concentrate instead on the important elements…
The word croquis comes from French and means simply "sketch".
Perhaps you are familiar with this explanation of the word croquis , not only because it comes from Wikipedia, but also because you already practice this kind of drawing (or have been practicing it in the past) and therefore know the meaning and the benefits of it. Making croquis is a very important way of developing and maintaining your drawing skills.
I took it very seriously several years ago when I joined a sketching club. We meet every Monday evening to do the quick sketches of a live model. This practice has helped me to regain my drawing skills, which, by the way, have declined dramatically due to a shock that I have experienced twenty years ago. Years later I found the cure to this particular problem in the mentioned sketching club.
The croquis and sketches from below were done during the Monday evening drawing sessions. Some of them were done in five to seven minutes, and some of them in ten to fifteen minutes.