I am often encouraging my students to "think" about what the character is feeling before putting down the gesture. As the saying goes, "A drawing that does not convey a state of mind or a thought through action, isn't a very good drawing."
I notice sometimes the more clothing the figure is wearing, the more people focus on the the drapery and the folds and such. The less the figure is wearing the more artists tend to focus on the anatomy and the musculature of the figure.
I suggest giving equal consideration (if not more) to what is motivating the figures muscles to work in such as way? What does the clothing say about the character and what they want?
Constantin Stanslavsky said, " In every physical action, there is always something psychological and vice versa. There is no inner experience without external physical expression."
It reminds me of the quote from George Bridgman who said, "The hand is thought of being the slave of action. But the slave of of action is the master of expression." I think the same thought can be applied to the human figure.
Please consider the photos below of some of my favourite masters: Rockwell, Michaelangelo, Frazetta and Kahl.
How quickly and easily can you read what the gesture is communicating about the character and what is motivating them?