It is a stylized human dynamic pose. I added muscle referenced human anatomy photos and imaged where muscles are in the body. Also, Lilly brought a human anatomy model from Barry in the class, I observed the model as well. the model pose is a bit different, so it was not exactly the same, but it was very useful. The ballerina in the reference is slimmer than my sculpture but I stylized and detailed muscle because it is for studying human muscle and anatomy. I have studied anatomy for a long time, but sculpting is much more helpful than just sketching to me.
Jihyo's Artworks 