Notes:
So your probally noticed that this is not a study of all the muscles on the torso and it has a 1# on it
Well, as a lot of things on this live, the muscles of the torso are pretty complicated to understand, a lot of them overlap each other or have some weird shapes. I decided then to limit my self to undestand 4 of them (4 in the front and 4 on the back).
Front: the easiest one, the front muscles are quite large and almost all of them, regardless of body type, will be visible. My favorite one is the Rectus, it makes SO much easier to understand twisted poses by studying him and how he shapes the torso.
Back: literally hell, the amount of muscles on the back is comically scary, sure a lot of them don't show on a bunch of body types, but the bones will be one of the focuses to understand the back, but one muscle need more attention, the trapezio is a star shaped muscles on the back and if you undestand him, you will do a LOT of progress on undeaantign and making beutifuls backs
conclusion: the muscles of the body are weird and difficult, but understanding them could make more body types easier to understand and draw. I just need more time and more study to make it better. That’s why I decided to make this the first one. In the next couple of weeks, I will be focusing on putting this type of long-term study in place, where you will be able to see a way to draw more body types and how you can style them.