So, here are a few charcoal drawing I made some time ago... The technique on each one of these is different. Some are just anatomical studies, others are quick gesture studies and only one of them (the woman) is actually a finished render. I only used a charcoal pencil for that one, there is hardly any blending there.

finished render.

Gesture/anatomical study.

Arm anatomy study.
Quick anatomical and proportion study.

Gesture study.