2nd trimester… skeleton has already been blocked in and now muscles are added. I begin with the torso first and move out. Deepest muscles first then those that are most superficial. I don’t get too deep.
I’m only concerned with those muscle that have a direct impact on the surface of the skin and create form. I’m not trying to be exhaustive with my anatomy students. My intent is to only  focus on  information that is useful to an artist. We are not medical students.
Students are encouraged to sculpt each individual muscle with in the proper order I set… always keeping in mind each  individual muscle’s shape, it’s origin, and insertion.