Now don't go getting illusions of grandeur just because you can draw these quick gesture skeletons very well. You still have to skin it and make a figure. If you put a stiff figure on top of your graceful skeleton you defeat the purpose.
Fig. 1 - A decent gesture skeleton. You can get a nice active figure out of it.
Fig. 2 - The active and passive lines have been forgotten and a stiff figure is the result.
Fig. 3 - Gesture skeleton is exaggerated more, making the punching figure more dynamic. The punched figure could be more dynamic if one foot is lifted off the ground. Let's say for the story's sake, the figure can take a punch and stands his ground to counter punch. Then we have a good case for letting him be flat- footed.
Fig. 4 - Neophyte boxers are taught to put their body into the punch. Artist have to do the same thing when drawing. Look at how the pose and energy is contributing to the punch. The angle of head, the lean of the body and that long line of motion that is the actual punch.
To be continued....
Remember, go out and just create!