I can't give you a definite what's right. Everyone's experience is different on this. When I was first learning to draw a full body, I was tracing random anime poses and putting my character's heads on them. After awhile, I did stop doing that and I had (somehow) a basis for drawing a body. Before I just didn't know where to begin. It was not a good habit to learn but it actually got me somewhere from actively observing the lines and why they behave, curve, bend the way they do. If one relies on them too much, they become very limited in what they can do and that can sometimes be hard to break out of too.
Now with using 3d models, I see it as one of those shortcuts that make it easier to draw something but hinders my personal style. Same as the paint tool sai Stabilizer or any sort of 'stabilizer.' Using a model helps with learning the body (like my experience) and how it should look in a given pose. But using models takes away from your personal style.
When I tried copy a pose line by line, it looked wrong. The body didn't fit my style or the character the body or body part was being attached to. (In fact, every time I got lazy and tried to trace a reference, it fucking looked like shit and I had to start again)
What I would recommend is using a 3d pose as a reference, not for tracing.
If you use the model ninjashira posted above, what I would recommend is to copy it, not trace over it. Actively observe the form of the lines around the armpit, around the abdomen, the legs, etc. If you're more rigorously studying the figure, then you can try drawing the basics like he did in the pink draft. Doesn't have to be anatomical unless you are looking to study the figure.
In sum, everyone picks up things differently but I would never recommend relying on 3d models (or stabilizers) because it hurts your original style and acts as a shortcut leaving you limited in your ability. Again, that's more preference because there are people who can create pretty amazing work relying on 3d components or using 3d backgrounds and such. It really depends on what you are going for but for pure hand drawn art style, you got to rely on yourself.