This is what really Overlapping Action is....

Follow Through :- Once a moving figure has come to a halt, certain aspects of the figure(such as arms,hair,tails.etc) or any loose items (such as drapery) may sway forward & backward at a decreasing rate until themselves finally come to rest.

Drag :- Some elements of the figure will begin their motion before others & be the prime source of animation,These parts can be inanimate objects like clothing or the antenna on a car, or parts of the body, such as arms or hair. On the human body, the torso is the core, with arms, legs, head and hair appendices that normally follow the torso's movement. Body parts with much tissue, such as large stomachs and breasts, or the loose skin on a dog, are more prone to independent movement than bonier body parts.

Overlapping Action :- This is where things move in parts, where everything Doesn't happen at the same time. it means tendency for parts of the body to move at different rates (an arm will move on different timing of the head and so on). one part starts first & other part follow.