I'll watch TV with a sketch book and pencil in hand and quickly draw feet, eyes, hands, facial expressions, simple body types in action...running, leaping, turning, twisting. I'll chart elaborate paths of actions (ups and downs, twirling, etc) and time out how many frames to assign them.
I'll play with the idea of "consecutive breaking of the joints" to get the feeling of fluidity in movement. Draw the various stages of a generic arm waving around. Analyze where the force comes from. Does it start with the shoulder or the elbow? It makes a difference in what you are trying to portray in the character's acting.
Think of this process as "Aerobics for the Animator's Mind."
|Here's a sample of a doodle page I played on while sitting on my front porch, taking some air.|