MUSCLES
When it comes to muscles in figure drawing you could spend years practicing and studying
where they are, names, function, shape/form, insertion, and origin. It is something that you will need to constantly do. Plain truth, its a life time of learning. Thats because of the complexity of the human body and the fact that it changes from person to person. Having a foundation will add you in developing your ability to create representational drawings and paintings. When looking at these drawings pay attention to corners that the body makes, pay attention to the cross contour that each muscle creates, high and low points or where the thickest part lies, and how the flow of the figure follows the muscles. These are the basics........what is important is practice practice practice.